Flashcards in Connective Tissue Disorders Deck (18)
-what is the primary form? secondary?
-what is the sicca complex?
def: chronic inflammatory disorder characterized by diminished lacrimal and salivary gland function. (autoimmune dz)
Primary form: not associated with any other dz
Secondary: tends to complicate other Rheumatic conditions, MC dz associated with secondary is RA.
Sicca complex= old name for SS, keratoconjunctivitis, xerostomia.
-not well understood
-lymphocytic infiltrative rather than aby mediated.
(lymphocytic infiltration into lacrimal and salivary glands, where lymphocytes are not normally found, impairs function)
-what are some mild sx? severe?
-what are some of the sx of extraglandular involvement?
Mild: dry eyes and mouth, maybe fatigue, myalgias, and cognitive dysfunction,
Severe: florid salivary enlargement, adenopathy, along with dry eyes and mouth.
*extraglandular involvement 25% and non-hodgkins lymphoma developed in 2.5%
Extraglandular involvement sx:
-vaginal dryness-- dyspareunia
-recurrent rhinitis and sinusitis
-bronchial dryness leading to dry cough
-criteria for dx
-keratoconjunctivitis = gritty/sandy sensation, dry eyes
-xerostomia = dry
-salivary gland enlargement = firm and nontender. (MC is parotid)
-ocular sx of inadequate tear production
-ocular signs of corneal damage
-oral sx of decreased salivary production
-presence of auto-abys *anti-Ro/SSA and/or anti-La/SSB
Complications of Xerostomia and keratoconjunctivitis in sjogrens syndome.
-laryngotracheal reflux= freqeuent throat clearing, cough, substernal pain
-chronic esophagitis = d/t impaired clearance of acid and lack of the buffering effects of saliv
Primary Sjogrens Syndrome:
-dx criteria of primary and secondary SS
-Tests used in dx of SS
Dx: PRIMARY- no other CT disorder.
-positive salivary gland bx or anti-Ro/SSA or/and anti-La/SSB and satisfies a total of 4 of 6 items.
-items ocular signs, bx, salivary gland involvment, or autoabys
SECONDARY: a CTD is present and both of the following criteria are met:
-one item indicitive of ocular or oral dryness present
-any two of the following 3 objective items are present:
--positive salivary gland bx
-abnormal test of salivary gland dysfunction
-schirmer = tear test, measuring fluid level on filter paper, less than 5mm is abnormal.
-Rose Bengal test
-labs: CBC w/ diff, CMP, sed rate UA (sugar and protein)
- call the rheumatologist...
-topical therapy of dry eyes and dry mouth.
*management is done best by rheumatologist*
-avoid irritants or exacerbating drugs, low humidity atomospheres
-excellent oral hygiene
-topical moisturizers and lozenges
-stimulate salivary flow w/ sugarless candies (too much sorbitol can cause diarrhea)
-muscarinic agonists (cevimeline)
-replacement of tears: hypromellose or methylcellulose
-Topical cyclosporine (Restatsis)******
*if systemic dz then use hydroxychloroquine or methotrexate
-what is the difference between limited scleroderma and systemic sclerosis?
Limited scleroderma = CREST.
Systemic sclerosis is when the skin is affected but also with systemic internal organ involvement.
-peak onset in age
-vascular damage; ENDOTHELINS cause vasoconstriction & are fibrinogenic
-immune activation: activation of endothelial cells results in up regulation of adhesion molecules & leukocyte migration out of vasculature
-excessive synthesis of extracellular matrix w/ deposition of structurally normal collagen
Systemic Sclerosis: -dx
-based upon the presence of charactersitic clinical findings
*the combination of skin induration pluse ONE or more of the following:
-heartburn and/or dysphagia of new onset
-acute onset of HTN* and renal insufficiency*
- dyspnea on exertion associated with interstitial pulm changes
-diarrhea with malabsorption
-facial, lip, or hand telangiectasias
-digital infarctions aand or digital tip pitting
-no tx that comprehensively addresses this dz. Tx is directed at specific organ manifestations:
-cutaneous manifestations = emollient creams to soften and decrease itch. Antihistamines and doxepin, potent topical steroids and methotrexate.
-raynauds = prevention, Ca channel blockers (nifedipine or amlodipine), alpha blockers, low dose ASA
-GI = GERD is treated with prevention, PPI, promotility agent (azithromycin)
-Pulm manifestations = lung fibrosis; ground glass on CT. Rx cyclophosphamide
-cardiac manifestations= antiarrhythmics and cardiac pacing if needed.
-Erectile dysfunction* & dyspareunia
-what are the cutaneous manifestations?
-thickening and hardening of the skin of the fingers, hands, and face are the earliest.*
-pitting at the fingertips
What is the MC initial manifestation of scleroderma?
Raynauds phenomenon is the initial manifestation of slceroderma.
-sx & cause
-when is this considered primary taynauds?? secodnary?
Cause: exaggerated vascular response to cold temperature of emotional stress. Abnormal vasoconstriction of digital arteries and cutaneous arterioles.
-sharply demarcated color changes (blue or white) of the skin of the digitis.
-with rewarming the skin blushes upon recovery.
Primary raynauds if these sx occur alone without evidence of any associated disorder.
Secondary if presenece of the disorder in association with related illness such as scleroderma.
-prevention, Ca channel blockers (nifedipine or amlodipine), alpha blockers, low dose ASA
What is CREST syndrome? aka? Complications?
Calcinosis, Raynauds phenomenon, Esophageal dysmotility, sclerodactyly, Telangiectasia
aka: limited cutaneous slceroderma
Complications: pulm HTN and CHF.
-what three rashes are MC seeN?
Def: inflamm muscle dz that can occur with or without eruption. with eruption - dermatomyositis and without is polymyositis
Pathophys: inflamm change of myocytes leads to proximal muscle weakness.
-Gottrons Sign (PIP and MCP joints)
-Purple heliotrope eruption over eyelids.
-Shawl sign over anterior chest and over the shoulders.
-earliest is proximal muscle weakness, onset is insidious with gradual worsening over a period of several months.
-muscle weakness is symmetric and proximal.
-Check CPK, LDH, AST/ALT
*medical hx to see if they are on statins since they cause myalgias.
-cellular infiltrate focused around blood vessels*
-cellular infiltrate within the fascicle** (just the muscles)