Dermatosis Skin Disorders any disorder of the skin

Dermatosis Skin Disorders • any disorder of the skin • many involve dermatitis Skin Lesions -inflammation of the skin -may be benign or sign of disease any variation from skin’s normal structure elevated, flat, depressed distinguished by abnormal tissue density growth of skin cells calcification edema -swelling due to fluid

abnormal coloration pigment production blood oxygen content e. g. acne, warts, scabs, insect bites, blisters, freckles, scratch, athletes foot, bedsores -lack of blood flow causes tissue damage and death -infections may develop

Burns fire UV rays hot surface electricity chemicals First Degree (Partial Thickness) sunburn reddening of skin no blisters -actual tissue minor discomfort damage is minimal

Second Degree (Partial Thickness) deep epidermal layers upper layers of dermis blisters, pain, swelling scarring -damage to glands/hair follicles -complete dermal destruction does NOT occur Third Degree (Full Thickness) complete epider. /dermal destruction extends to subcut. , muscle, bone fluid loss painless immediately after injury

-skin common site b/c it is body’s 1 st line of defense Infections caused by bacteria, viruses, fungi, etc. Tinea -fungi requires a moist fungal infection environment to grow ringworm, athlete’s foot erythema, scaly, crusty, cracks Warts -virus, contagious thru direct contact Boils infection of hair follicles inflamed pustules

Scabies -transmitted by skin-to-skin contact itch mite -scratching can lead to 2 ndary infections lays eggs in stratum corneum tiny, red papules (inflamed lesions) -formed by larvae that hatch

Lesions

Lesions - Bedsores

Lesions - Bedsores

First Degree Burn

Third Degree Burn

Third Degree Burn

Rule of Nines determines extent of injury

Tinea

Athletes Foot

Warts

Boils

Scabies

Scabies