review Flashcards
(28 cards)
- Signs/Symptoms of RA vs OA?
- joint deformity
- joint tenderness
- decreased ROM
- herbedens nodes – distal finger (interphalangeal) joints crooked
- bouchards nodes – proximal finger (interphalangeal) joints are crooked
B- joint deformity
B- joint tenderness
B- decreased ROM
OA- herbedens nodes – distal finger (interphalangeal) joints crooked
OA- bouchards nodes – proximal finger (interphalangeal) joints are crooked
- Relationship between alcoholism and liver disease
- Excessive alcohol consumption is a leading cause of liver ________ and increases the risk of liver ________
- Alcoholic liver disease ranges from _______ liver to life-threatening ________ and liver failure.
- Alcohol is metabolized into acetaldehyde, which is _______ to liver cells and activates inflammatory pathways.
- Chronic alcohol exposure leads to:
o ____ accumulation (steatosis),
o inflammation (alcoholic _________)
o progressive ________ (cirrhosis) in the liver.
- Relationship between alcoholism and liver disease
- Excessive alcohol consumption is a leading cause of liver disease and increases the risk of liver cancer.
- Alcoholic liver disease ranges from fatty liver to life-threatening cirrhosis and liver failure.
- Alcohol is metabolized into acetaldehyde, which is toxic to liver cells and activates inflammatory pathways.
- Chronic alcohol exposure leads to:
o fat accumulation (steatosis),
o inflammation (alcoholic hepatitis)
o progressive scarring (cirrhosis) in the liver.
thyroid, hypothalamus, pituitary, hashimoto’s
Primary hypothyroidism -
_____ levels (T3 and T4) with ____ levels of (TSH)
Secondary hypothyroidism -
_____ levels of T3, T4, and TSH2.
Tertiary hypothyroidism -
_____ levels of T3, T4, TSH, and TRH3.
Autoimmune disorders -
_____ T3 and T4 and _____ TSH1.
Primary hypothyroidism - thyroid
Low levels (T3 and T4) with high levels of (TSH)
Secondary hypothyroidism - pituitary
Low levels of T3, T4, and TSH2.
Tertiary hypothyroidism - hypothalamus
Low levels of T3, T4, TSH, and TRH3.
Autoimmune disorders - hashimoto’s
low T3 and T4 and high TSH1.
thyroid secretes - T3 and T4
Hypothalamic-pituitary secretes - TSH
So with right sided heart failure = s/s blood backs up in _________ circulation
- Congestion in right chambers
- Right ventricle size increase
- Backflow into vena cava, decreased blood to the lungs
- Congestion in jugular veins, liver, lower extremities (body)
- Common cause – COPD
Findings:
- JVD
- Dependent/Peripheral edema – lower extremities
- Weight gain
- Hepatosplenomegaly – enlarged spleen/liver
- Ascites (fluid accumulation in abdomen)
- Nausea, anorexia
So with right sided heart failure = s/s blood backs up in systemic circulation
- Congestion in right chambers
- Right ventricle size increase
- Backflow into vena cava, decreased blood to the lungs
- Congestion in jugular veins, liver, lower extremities (body)
- Common cause – COPD
Findings:
- JVD
- Dependent/Peripheral edema – lower extremities
- Weight gain
- Hepatosplenomegaly – enlarged spleen/liver
- Ascites (fluid accumulation in abdomen)
- Nausea, anorexia
Secondary Hypothyroidism:
Cause: Dysfunction of the pituitary gland, which fails to produce enough TSH to stimulate the thyroid.
Hormone Levels: _____ levels of T3, T4, and TSH2.
Common Causes: Pituitary tumors, radiation therapy, or pituitary surgery.
Secondary Hypothyroidism:
Cause: Dysfunction of the pituitary gland, which fails to produce enough TSH to stimulate the thyroid.
Hormone Levels: Low levels of T3, T4, and TSH2.
Common Causes: Pituitary tumors, radiation therapy, or pituitary surgery.
Tertiary Hypothyroidism:
Cause: Dysfunction of the hypothalamus, which fails to produce enough thyrotropin-releasing hormone (TRH) to stimulate the pituitary gland.
Hormone Levels: ______ levels of T3, T4, TSH, and TRH3
Common Causes: Hypothalamic tumors, trauma, or radiation therapy affecting the hypothalamus3.
Tertiary Hypothyroidism:
Cause: Dysfunction of the hypothalamus, which fails to produce enough thyrotropin-releasing hormone (TRH) to stimulate the pituitary gland.
Hormone Levels: Low levels of T3, T4, TSH, and TRH3.
Common Causes: Hypothalamic tumors, trauma, or radiation therapy affecting the hypothalamus3.
- Onset/duration of Insulins
________-acting (lispro, aspart, glulisine):
Onset: 10-30 minutes
Peak: 30 minutes - 3 hours
Duration: 3-5 hours
_______-acting (regular):
Onset: 30 minutes - 1 hour
Peak: 2-5 hours
Duration: 5-8 hours
__________-acting (NPH):
Onset: 1.5-4 hours
Peak: 4-12 hours
Duration: 12-18 hours
________-acting (glargine, detemir, degludec):
Onset: 0.8-4 hours
Peak: Less defined or no pronounced peak
Duration: 16-24 hours
- Onset/duration of Insulins
Rapid-acting (lispro, aspart, glulisine):
Onset: 10-30 minutes
Peak: 30 minutes - 3 hours
Duration: 3-5 hours
Short-acting (regular):
Onset: 30 minutes - 1 hour
Peak: 2-5 hours
Duration: 5-8 hours
Intermediate-acting (NPH):
Onset: 1.5-4 hours
Peak: 4-12 hours
Duration: 12-18 hours
Long-acting (glargine, detemir, degludec):
Onset: 0.8-4 hours
Peak: Less defined or no pronounced peak
Duration: 16-24 hours
- Complications of poorly controlled DM
Acute or chronic complications?
- Hypoglycemia (low blood sugar)
- Diabetic ketoacidosis (DKA)
- Hyperosmolar hyperglycemic state
- Macrovascular: Coronary artery disease,
- Macrovascular: peripheral vascular disease,
- Macrovascular: stroke
- Microvascular: Retinopathy,
- Microvascular: nephropathy,
- Microvascular: neuropathy
Acute Complications:
- Hypoglycemia (low blood sugar)
- Diabetic ketoacidosis (DKA)
- Hyperosmolar hyperglycemic state
Chronic Complications:
- Macrovascular: Coronary artery disease, peripheral vascular disease, stroke
- Microvascular: Retinopathy, nephropathy, neuropathy
Basic DM pathophysiology
1. Insulin is a hormone produced by the ____________ beta cells that regulates blood glucose levels.
2. there is either insufficient insulin production (type ___) or the body’s cells are resistant to insulin’s effects (type ___), leading to hyperglycemia.
3. Chronic hyperglycemia causes cellular _____ and metabolic abnormalities affecting various organs.
4. In type 1 diabetes, the ________ attacks and destroys the insulin-producing beta cells.
5. In type 2 diabetes, insulin ______ and relative insulin ________ occur due to factors like obesity, sedentary lifestyle, and genetic predisposition.
- Insulin is a hormone produced by the pancreatic beta cells that regulates blood glucose levels.
- there is either insufficient insulin production (type 1) or the body’s cells are resistant to insulin’s effects (type 2), leading to hyperglycemia.
- Chronic hyperglycemia causes cellular damage and metabolic abnormalities affecting various organs.
- In type 1 diabetes, the body’s immune system attacks and destroys the insulin-producing beta cells.
- In type 2 diabetes, insulin resistance and relative insulin deficiency occur due to factors like obesity, sedentary lifestyle, and genetic predisposition.
So with left sided heart failure = s/s blood backs up in ________ circulation
- Congestion in left chambers
- Left ventricle size increase
- Backflow into pulmonary veins
- Congestion in lungs
- Common cause – HTN
Findings:
- Cough, crackles, wheezes
- Pulmonary edema – frothy sputum, blood tinged
- Paroxysmal nocturnal dyspnea (PND) – feel smothered at night, waking up suddenly gasping for air
- Shortness of breath
- orthopnea (difficulty breathing while lying flat) – tripod to breathe best
- Fatigue, confusion due to low cardiac output
So with left sided heart failure = s/s blood backs up in pulmonary circulation
- Congestion in left chambers
- Left ventricle size increase
- Backflow into pulmonary veins
- Congestion in lungs
- Common cause – HTN
Findings:
- Cough, crackles, wheezes
- Pulmonary edema – frothy sputum, blood tinged
- Paroxysmal nocturnal dyspnea (PND) – feel smothered at night, waking up suddenly gasping for air
- Shortness of breath
- orthopnea (difficulty breathing while lying flat) – tripod to breathe best
- Fatigue, confusion due to low cardiac output
- Expected findings of iron deficiency anemia
- ____ hemoglobin and hematocrit levels
- ______cytic and _____chromic red blood cells
- _____ mean corpuscular volume (MCV) and ______ mean corpuscular hemoglobin concentration (MCHC)
- ______ serum ferritin and transferrin saturation levels
- Potential symptoms like fatigue, weakness, pallor, headaches, ______ cravings
- Physical signs like _________ (spoon nails), _______itis, angular ______titis
- In children, poor growth, irritability, developmental delays
- Expected findings of iron deficiency anemia
- Low hemoglobin and hematocrit levels
- Microcytic (small) and hypochromic (pale) red blood cells
- Low mean corpuscular volume (MCV) and mean corpuscular hemoglobin concentration (MCHC)
- Low serum ferritin and transferrin saturation levels
- Potential symptoms like fatigue, weakness, pallor, headaches, pica cravings
- Physical signs like koilonychia (spoon nails), glossitis, angular stomatitis
- In children, poor growth, irritability, developmental delays
- HTN medications:
Beta Blockers:
Common side effects –
- ______cardia,
- hyp___tension,
- fatigue,
- bronchospasm (non-selective agents)
Hold for -
- bradycardia,
- heart block,
- decompensated heart failure,
- reactive airway disease exacerbation
ACE Inhibitors:
Common side effects –
- c______
- hyp___tension,
- hyp___kalemia,
- angioedema,
- acute kidney injury
Hold for –
- angioedema,
- severe hypotension,
- hyperkalemia,
- acute kidney injury
ARBs:
Common side effects –
- Hyp___tension,
- hyp___kalemia,
- dizziness
Hold for –
- severe hypotension,
- hyperkalemia,
- acute kidney injury
Calcium Channel Blockers:
Common side effects –
- Peripheral edema,
- headache,
- flushing,
- constipation
Hold for –
- severe hypotension,
- bradycardia,
- heart block
- HTN medications: Beta blockers, ACE inhibitors, ARBS, CCB. Common side effects and when to hold.
Beta Blockers:
Common side effects –
- Bradycardia,
- hypotension,
- fatigue,
- bronchospasm (non-selective agents)
Hold for -
- bradycardia,
- heart block,
- decompensated heart failure,
- reactive airway disease exacerbation
ACE Inhibitors:
Common side effects –
- Cough,
- hypotension,
- hyperkalemia,
- angioedema,
- acute kidney injury
Hold for –
- angioedema,
- severe hypotension,
- hyperkalemia,
- acute kidney injury
ARBs:
Common side effects –
- Hypotension,
- hyperkalemia,
- dizziness
Hold for –
- severe hypotension,
- hyperkalemia,
- acute kidney injury
Calcium Channel Blockers:
Common side effects –
- Peripheral edema,
- headache,
- flushing,
- constipation
Hold for –
- severe hypotension,
- bradycardia,
- heart block
- Signs/Symptoms of RA vs OA?
- Manifestations are asymmetrical
- Manifestations are symmetrical
- deep aching joint pain – esp with exertion, relieved with rest
- joint pain with cold weather
- stiffness in morning
- crepitus of joint during motion
- joint swelling – hard
- joint swelling - spongy warm
- altered gait
- limited range of motion
OA - Manifestations are asymmetrical
RA - Manifestations are symmetrical
OA - deep aching joint pain – esp with exertion, relieved with rest
OA- joint pain with cold weather
OA- stiffness in morning
OA- crepitus of joint during motion
OA- joint swelling – hard
RA - joint swelling - spongy warm
OA- altered gait
OA- limited range of motion
- Symptoms of different diseases that fall under COPD
____________
- Persistent cough with mucus production
- Wheezing
- Shortness of breath, especially with activity
_____________
- Shortness of breath, initially with exertion
- Wheezing
- Chest tightness
- Frequent respiratory infections
_____________
- Progressive dyspnea (shortness of breath)
- Chronic cough
- Sputum production
- Fatigue
- Pursed-lip breathing
- Use of accessory muscles for breathing
- Barrel-chested appearance in advanced stages
- Symptoms of different diseases that fall under COPD
Chronic bronchitis:
- Persistent cough with mucus production
- Wheezing
- Shortness of breath, especially with activity
Emphysema:
- Shortness of breath, initially with exertion
- Wheezing
- Chest tightness
- Frequent respiratory infections
General COPD symptoms:
- Progressive dyspnea (shortness of breath)
- Chronic cough
- Sputum production
- Fatigue
- Pursed-lip breathing
- Use of accessory muscles for breathing
- Barrel-chested appearance in advanced stages
- Complications of acute viral gastroenteritis?
- __________ : Excessive fluid loss from vomiting and diarrhea
- ___________ Imbalances: from GI loss, can result in metabolic acidosis and dysrhythmias if not corrected.
-__________: Prolonged GI loss, impair nutrient absorption, vitamin/mineral deficiencies and weight loss
- Intestinal Complications: Severe inflammation can lead to complications like toxic ________, intestinal __________, or intussusception (telescoping of intestines).
- __________ Complications: Dehydration and electrolyte disturbances may rarely cause seizures, encephalopathy, or Guillain-Barré syndrome.
- Renal Complications: Dehydration and electrolyte abnormalities increase the risk of ________ kidney injury or hemolytic uremic syndrome in some cases.
- Dehydration: Excessive fluid loss from vomiting and diarrhea
- Electrolyte Imbalances: from GI loss, can result in metabolic acidosis and dysrhythmias if not corrected.
- Malnutrition: Prolonged GI loss, impair nutrient absorption, vitamin/mineral deficiencies and weight loss
- Intestinal Complications: Severe inflammation can lead to complications like toxic megacolon, intestinal perforation, or intussusception (telescoping of intestines).
- Neurological Complications: Dehydration and electrolyte disturbances may rarely cause seizures, encephalopathy, or Guillain-Barré syndrome.
- Renal Complications: Dehydration and electrolyte abnormalities increase the risk of acute kidney injury or hemolytic uremic syndrome in some cases.
- Basic causes of cancer
Cancer arises from accumulated genetic mutations that allow cells to escape normal growth controls and become malignant.
The main causes include:
- ____________ exposures like tobacco smoke, UV radiation, and carcinogenic chemicals. These can directly damage DNA or generate reactive molecules that cause mutations.
- __________ mutations in oncogenes or tumor suppressor genes that increase cancer susceptibility.
- Random mutations from errors during normal cell __________ and metabolism. As we ____, mutations accumulate.
- Chronic _________ which generates mutagenic molecules and growth factors that promote tumor development.
- ______ infections like human papillomavirus (HPV), hepatitis B/C viruses which can integrate viral genes or induce mutations.
- _______ imbalances, like excess estrogen exposure linked to certain breast cancers.
- Basic causes of cancer
Cancer arises from accumulated genetic mutations that allow cells to escape normal growth controls and become malignant.
The main causes include:
- Environmental exposures like tobacco smoke, UV radiation, and carcinogenic chemicals. These can directly damage DNA or generate reactive molecules that cause mutations.
- Inherited genetic mutations in oncogenes or tumor suppressor genes that increase cancer susceptibility. About 5-10% of cancers are hereditary.
- Random mutations from errors during normal cell replication and metabolism. As we age, mutations accumulate.
- Chronic inflammation which generates mutagenic molecules and growth factors that promote tumor development.
- Viral infections like human papillomavirus (HPV), hepatitis B/C viruses which can integrate viral genes or induce mutations.
- Hormonal imbalances, like excess estrogen exposure linked to certain breast cancers.
- Basic adverse effects of cancer chemotherapeutic agents
- pancytopenia - _____, ______, _______
- GI issues
- Alopecia (hair loss)
- Fatigue
- Increased ___________ risk
- Organ toxicities (nephrotoxicity, cardiotoxicity, hepatotoxicity, etc.)
- Peripheral neuropathy
- Infertility
- Secondary malignancies
- Basic adverse effects of cancer chemotherapeutic agents
- pancytopenia - Myelosuppression (decreased blood cell counts leading to anemia, neutropenia, thrombocytopenia)
- Gastrointestinal toxicity (nausea, vomiting, diarrhea, mucositis)
- Alopecia (hair loss)
- Fatigue
- Increased infection risk
- Organ toxicities (nephrotoxicity, cardiotoxicity, hepatotoxicity, etc.)
- Peripheral neuropathy
- Infertility
- Secondary malignancies
Autoimmune Hypothyroidism:
Cause: The immune system attacks the thyroid gland, leading to its dysfunction.
Hormone Levels: Typically presents as primary hypothyroidism with ____ T3 and T4 and ____ TSH1.
Common Causes: Hashimoto’s thyroiditis is the most common form of autoimmune hypothyroidism
Autoimmune Hypothyroidism:
Cause: The immune system attacks the thyroid gland, leading to its dysfunction.
Hormone Levels: Typically presents as primary hypothyroidism with low T3 and T4 and high TSH1.
Common Causes: Hashimoto’s thyroiditis is the most common form of autoimmune hypothyroidism
Medications for HF (and the contraindications for giving them)
1.- ___________: (e.g. lisinopril, enalapril)
Contraindicated in pregnancy, angioedema (life-threatening allergic reaction causing swelling of the face, lips, tongue, and airways), hyperkalemia.
2.- ___________: (e.g. valsartan, losartan)
Contraindicated in pregnancy, renal artery stenosis, hyperkalemia.
3.- Valsartan/Sacubitril: (Entresto)
Contraindicated in pregnancy, history of angioedema.
4.- Beta Blockers: (e.g. carvedilol, metoprolol)
Contraindicated in _____cardia, heart blocks, decompensated HF.
5.- Aldosterone Antagonists: (e.g. ________)
Contraindicated in hyperkalemia, renal impairment.
6.- ___________: (e.g. furosemide)
Contraindicated in anuria, hepatic coma.
7.- Digoxin
Contraindicated in ventricular fibrillation, Wolff-Parkinson-White syndrome.
8.- Hydralazine/Isosorbide Dinitrate
Contraindicated in coronary artery disease, tachycardia.
1.- ACE Inhibitors: (e.g. lisinopril, enalapril)
Contraindicated in pregnancy, angioedema (life-threatening allergic reaction causing swelling of the face, lips, tongue, and airways), hyperkalemia.
2.- Angiotensin II Receptor Blockers (ARBs): (e.g. valsartan, losartan)
Contraindicated in pregnancy, renal artery stenosis, hyperkalemia.
3.- Valsartan/Sacubitril: (Entresto)
Contraindicated in pregnancy, history of angioedema.
4.- Beta Blockers: (e.g. carvedilol, metoprolol)
Contraindicated in bradycardia, heart blocks, decompensated HF.
5.- Aldosterone Antagonists: (e.g. spironolactone, eplerenone)
Contraindicated in hyperkalemia, renal impairment.
6.- Loop Diuretics: (e.g. furosemide)
Contraindicated in anuria, hepatic coma.
7.- Digoxin
Contraindicated in ventricular fibrillation, Wolff-Parkinson-White syndrome.
8.- Hydralazine/Isosorbide Dinitrate
Contraindicated in coronary artery disease, tachycardia.
- Signs/Symptoms of RA vs OA?
- Early - Very little s/s, Maybe joint pain
- Inflammation
- Heat
- Joint subluxation
- Fatigue and malaise
- Could affect any and all body systems if severe enough
- SJORGRENS SYNDROME – destruction of moisture producing gland (salivary and lacrimal) – dry mouth and eyes
- Rheumatoid nodules – immune mediated granulomas, develop around inflamed joints, SQ and firm, maybe painful
RA- Early - Very little s/s, Maybe joint pain
RA- Inflammation
RA- Heat
RA- Joint subluxation
RA- Fatigue and malaise
RA- Could affect any and all body systems if severe enough
RA- SJORGRENS SYNDROME – destruction of moisture producing gland (salivary and lacrimal) – dry mouth and eyes
RA- Rheumatoid nodules – immune mediated granulomas, develop around inflamed joints, SQ and firm, maybe painful
```
Primary Hypothyroidism:
Cause: Direct dysfunction of the thyroid gland itself.
Hormone Levels: _____ levels of thyroid hormones (T3 and T4) with ____ levels of thyroid-stimulating hormone (TSH) due to the pituitary gland trying to stimulate the thyroid.
Common Causes: thyroiditis, congenital hypothyroidism, surgical removal of the thyroid, or radiation to thyroid.
Primary Hypothyroidism:
Cause: Direct dysfunction of the thyroid gland itself.
Hormone Levels: Low levels of thyroid hormones (T3 and T4) with high levels of thyroid-stimulating hormone (TSH) due to the pituitary gland trying to stimulate the thyroid.
Common Causes: thyroiditis, congenital hypothyroidism, surgical removal of the thyroid, or radiation to thyroid.
- MOA of PUD medications
- Antacids
MOA - Neutralizes _____ - Cimetidine and Famotidine: ____ receptor antagonists
MOA
- target gastric acid production
- Block _____ receptors in the stomach
- Reduce gastric acid secretion
- ___creases stomach pH - Omeprazole, Pantoprazole, Esomeprazole magnesium: _________
MOA
– target gastric acid production
- Binds to _________
- Inhibits the hydrogen potassium ATPase enzyme system (proton pump) - Sucralfate: protectants
MOA
- Forms a protective barrier over ulcers by binding to exposed proteins.
- Also stimulates mucosal defense factors like bicarbonate and prostaglandins. - Misoprostol: prostaglandin analog.
MOA
- A prostaglandin analog that enhances mucosal defense by increasing mucus and bicarbonate secretion while reducing acid secretion. - Antibiotics (e.g. amoxicillin, clarithromycin)
MOA
- Used in combination to eradicate H. pylori infection, a major cause of PUD.
- Antacids
MOA - Neutralizes acid - Cimetidine and Famotidine: H2 receptor antagonists
MOA
- target gastric acid production
- Block h2 recpetors in the stomach
- Reduce gastric acid secretion
- Increases stomach pH - Omeprazole, Pantoprazole, Esomeprazole magnesium: Proton pump inhibitors (PPI)
MOA
– target gastric acid production
- Binds to proton pump
- Inhibits the hydrogen potassium ATPase enzyme system (proton pump) - Sucralfate:
MOA
- Forms a protective barrier over ulcers by binding to exposed proteins.
- Also stimulates mucosal defense factors like bicarbonate and prostaglandins. - Misoprostol:
MOA
- A prostaglandin analog that enhances mucosal defense by increasing mucus and bicarbonate secretion while reducing acid secretion. - Antibiotics (e.g. amoxicillin, clarithromycin)
MOA
- Used in combination to eradicate H. pylori infection, a major cause of PUD.
Inhaled corticosteroids are:
- designed for direct delivery to the lungs to treat respiratory conditions like _____ and ________
- They have a more _______ effect with minimal _______ absorption at standard doses.
- Inhaled steroids have _______ overall side effects compared to systemic steroids
- high doses of inhaled steroids can still lead to some systemic absorption and adverse effects.
Systemic corticosteroids:
- Ex: prednisone
- taken orally or injected, leading to ______ distribution throughout the body.
- They are used for various __________ and _________ disorders.
- Have _______ overall side effects compared to inhaled steroids
- can cause adrenal ________, immuno_________, fluid/electrolyte disturbances, and metabolic effects with long-term use.
Inhaled corticosteroids are
- designed for direct delivery to the lungs to treat respiratory conditions like asthma and COPD.
- They have a more localized effect with minimal systemic absorption at standard doses.
- Inhaled steroids have fewer overall side effects compared to systemic steroids
- high doses of inhaled steroids can still lead to some systemic absorption and adverse effects.
Systemic corticosteroids
- Ex: prednisone
- taken orally or injected, leading to widespread distribution throughout the body.
- They are used for various inflammatory and autoimmune disorders.
- Have more overall side effects compared to inhaled steroids - which can cause adrenal suppression, immunosuppression, fluid/electrolyte disturbances, and metabolic effects with long-term use.
___________ hypothyroidism - originates from the hypothalamus with decreased TRH production, leading to reduced TSH and thyroid hormones.
___________ hypothyroidism - stems from an abnormality in the thyroid gland itself, such as the inability to release thyroid hormones or defects in hormone synthesis.
______________ hypothyroidism- Hashimoto’s thyroiditis, where the body attacks its own thyroid tissue, can also cause hypothyroidism.
____________ hypothyroidism - begins at the pituitary level with reduced TSH secretion.
Tertiary hypothyroidism - originates from the hypothalamus with decreased TRH production, leading to reduced TSH and thyroid hormones.
Primary hypothyroidism - stems from an abnormality in the thyroid gland itself, such as the inability to release thyroid hormones or defects in hormone synthesis.
Autoimmune disorders - Hashimoto’s thyroiditis, where the body attacks its own thyroid tissue, can also cause hypothyroidism.
Secondary hypothyroidism - begins at the pituitary level with reduced TSH secretion.