Test #2 (Infectious Disease, Integumentary, some CV) Flashcards
(140 cards)
_______ refers to a traumatic or pathologic loss of normal tissue continuity, structure, or function.
Lesions
Small flat circumscribed lesion of a different colour than the normal skin.
Macule
Small, firm, elevated lesion.
Papule
Elevated lesion larger than a papule.
Nodule
Elevated, erythematous lesion that usually contains purulent exudate (pus).
Pustule
An elevated, thin walled lesion containing clear fluid.
Veslicle
Large, slightly elevated lesion with a flat surface; often topped by scale.
Plaque
Dry, rough surface, or dried exudates, or blood.
Crust
Thick, dry, rough skin surface (leather like).
Lichenification
Raised, irregular mass of collagen resulting from excessive scar formation.
Keloid
A small, deep crack or tear in the skin
Fissure
A cavity with loss of tissue from the epidermis and dermis; often weeping or bleeding.
Ulcer
Shallow moist cavity in the epidermis.
Erosion
These are temporary eruptions of the skin. They are associated with childhood diseases, heat, irritation, allergies, or drug induced reactions. They range in size from fractions of a millimetre, to many centimetres.
Rashes
The four types of \_\_\_\_\_\_ are: Blanched (white) Erythematous (red) Hemorrhagic, or purpuric (containing blood) Pigmented (coloured)
Rashes
A vesicle of fluid filled papule (a.k.a. bulla). There is a degeneration of epidermal cells; disruptions of intercellular junctions. This causes layers of skin to separate, and fluid to accumulate.
Blisters
______ are caused by friction, or burns, and are most common on the palmar surface of the hand, or plantar surface of the foot.
Blisters
A hyperkeratotic plaque of skin due to chronic pressure or friction. There is increased cohesion between cells, and decreased skin shedding. They may be removed by filing, but will reoccur if cause is not addressed.
Callus
Small, well circumscribed, conical, keratinous thickening of the skin.
• Usually appear on the toes from rubbing or ill-fitting shoes
• Painful on the feet – usually asymptomatic on the hands
• May be surgically removed, but may reoccur if the cause is not addressed
Corns
________ (Itch)
• The itch sensation originates in free nerve endings in the skin (nociceptors)
• Ranges from mild to severe
• May be a clue for internal disorders such as chronic renal disease, and biliary disease
• Triggering factors are warmth, touch, and vibration
• Most treatment measures are non-specific
Pruritis
Scratching an itch is a ______ reflex. It may or may not relieve the itch. Repeated scratching may lead to skin irritation and lacerations/excoriation.
Spinal
_______ (Dry skin) – Caused by dehydration of the stratum corneum. It may be the primary sign on a skin disorder, or an underlying systemic disease.
• Skin appears rough, scaly, wrinkled, and lined
• Dry skin is predisposed to itching which may result in cracking and fissuring
• Commonly affected areas include extremities, the back, abdomen, and waist
• Treatment is with moisturizing agents
Xerosis
Pigmentary skin disorders – These disorders involve ____________.
Melanocytes
White patches that suddenly appear on the skin. This is due to the absence of melanocytes, a decreased number of melanocytes, or melanocytes that just don’t produce melanin. Research has found an increase in hydrogen peroxide at the lesion sites.
Vitiligo