poda 3

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Author:
alvo2234
ID:
189312
Filename:
poda 3
Updated:
2012-12-13 12:39:56
Tags:
poda final leonard
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Description:
poda 3 final leonard (skin)
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  1. general functions of the skin
    • 1. largest organ (20% of bodyweight)
    • 2. protect the body (microorganisms, UV, fluid loss, mechanical stress)
    • 3. regulates body temp
    • 4. involved in vitamin D production
    • 5. touch and pressure receptors provide protective functions and pleasure sensations
  2. disorders of the skin
    • trauma
    • abnormal cell function
    • infection and inflm
    • systemic diseases
  3. pruritus
    • -itching
    • -most common symptom of primary skin disorders
    • -itch is carried by specific myelinated C-nerve fibers and triggered by itch mediators
    • -CNS can modulate itch
    • -chronic itching can result in infection and scarring
    • -pain stimuli at lower intensities can induce itching
  4. types of bacterial infections
    • cellulitis (staph or group B strep)
    • erysipealas (group A strep)
    • Impetigo (a-hem strep)
  5. types of viral infections
    • Herpes simplex virus
    • herpes zoster (shingles)
    • Varicella (chickenpox)
    • common warts (verrucae vulgaris)
  6. Types of fungal infections
    • tinea corporis (ringworm)
    • tinea capitis (scalp)
    • tinea pedis (athletes foot)
    • tinea cruris (jock itch)
    • candidiasis
  7. types of skin parasites
    • scabies
    • lice (pediculus capitis)
  8. Ticks bites can cause
    • lyme disease
    • rocky mountain spotted fever
  9. Mosquitoe bites can cause
    • malaria
    • yellow fever
    • dengue fever
    • filariasis
    • st. louis encephalitis
  10. fly bites can cause
    • pain
    • urticaria, mild bleeding
  11. Herpes simplex virus- 1
    • causes infection of:
    • 1. cornea (keratitis)
    • 2. mouth (gingivostomatitis)
    • 3. labia (labialis)
  12. Herpes simplex virus-2 causes
    • genital infections
    • -skin to skin contact during shedding
    • -mother to neonate (associated with morbidity and mortality)
  13. atopic dermatitis
    eczema
  14. triad of "atopy" eczema
    • asthma
    • allergic rhinitis
  15. type of sensitivity for eczema
    • -type I
    • -cause red, weeping crusts and chronic inlfm, lichenification (thickening and leather-like skin)
  16. allergic contact dermatitis type sensitivity
    • -type IV reaction
    • -allergen comes into contact with skin
    • -ex: nickel, gold, poison ivy, formaldehyde
  17. manifestations from contact dermatitis
    • erythema
    • swelling
    • pruritus
    • vesicular lesions
  18. what is irritant contact dermatitis
    • -nonimmunologic inflm of the skin caused by chemical irritation from acids or prolonged exposure to¬†irritating substances
    • -ex: soaps, solvents, plants
  19. symptoms of irritant contact dermatitis
    • -similar to those of allergic contact dermatitis
    • swelling
    • erythema
    • pruritus
    • vesicular lesions
  20. what is stasis dermatitis and what causes it
    inflm that occurs in the legs as a result of venous stasis, edema, and vascular trauma
  21. what is seborrheic dermatitis
    • -inflm of the skin involving the scalp, eyebrows, eyelids, nasolabial folds, and ear canals
    • -scaly, white, or yellowish plaques
  22. what is psoriasis
    • -chronic, noninfectious, inflm disorder, relapsing, proliferative skin disorder
    • -t cell immune-mediated skin disease
  23. manifestations of psoriasis
    • -scaly, thick, silvery, elevated lesions, usually on scalp, elbows, or knees caused¬†by high rate of mitosis in the basal layer
    • -epidermal turnover goes from 26-30 days to 3-4 days
  24. most common cancers
    basal cell/squamous cell carcinoma
  25. most serious cancer
    malignant melanoma
  26. types of skin cancers
    • basal cell
    • squamous cell
    • malignant melanoma
    • kaposi

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