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Dermatitis - Coggle Diagram
Dermatitis
Causes
Endogenous
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Neurodematitis
Result of repeated physical trauma, manifestation of OCD
Stasis Dermatitis
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Associated with other signs of venous hypertension (Pitting edema, stasis purpura, varicose veins, ulcers,)
Scaly plaques with exudation, crusting, erosions
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Nummular Dermatitis
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More chronic, often secondarily infected
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Treatment
High potency corticosteroids, antibiotics if infected, phototherapy, short course of pednison
Asteatotic Dematitis
Dry, Rough scaly, inflamed, cracked skin, frequent bathing, agign, dryness, low humidity
Dyshidrotic
Special vesciular type of hand/food dermatitis, sudden onset, deep seated pruriitis vesciles, secondary bacterial infection
Seborrheic
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Infantile form in first 3 months of life, Adult form 5% prevalence
Scalp, Ears, Face, symmetric, well demarcated, pink-yellow to red-brown, greasy scales, pruritis
Infantile: Gentle skin care, topical ketoconazole if severe
Adult: Anti fungal shampoo or cream, low potency corticosteroid may be needed
Exogenous
, Auto-Eczematization, Fungal, Scabies
Contact
Inflammation of cutaneous surface resulting from interaction of skin with chemical or physical agent
Types
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Contact urticaria
Need to take history on onset, distribution, site, products used, work history, hobbies, exposures
Environment
Scratiching
Stimulates the release of pro-inflammatory cytokines, itch not from histmines, regulated by neuropeptides
Irritants
Easier access in dermatitis prone skin, promotes pruritis and inflammatory response
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Immunolgic Abnormalities
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Acute Atopic Dermatitis
T Helper Type 2 cytokines, Mediate IgE immunoglobulins, IL-31 induces pruritis
Small Molecules
Jak Inhibitors, Act on multiple inflammatory pathways
Treatment
General Recommendations
Moisturize with irritant free cream, stop all irritants, unscented non-foaming soap, Humidifier in the bedroom, dust mite
Infection Management
Treat infection if present, if frequently infected, suggest bleach baths
Topical Corticosteroids
Used short term for flares, ointments almost always preferable over creams
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Sensitive Areas: Gluteal, groin, genitals, axilla, inframammary
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Side Effects
Atrophy, Telangiectasis, Striae, Hypopigmentation, Purpura
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Atopy vs Atopic
Atopy
Asthma, Allergic Rhino-conjunctivitis, Atopic Dermatitis
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Viruses
Eczema Herpeticum
Will have erosions with heme crusts, and associated with fever, malaise, lymphadenopathy
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Histopathology
Acute dermatitis
Lymphocytes in dermis, few eosinophils
Chronic Dermatitis
Epidermal thickening, increased granular layer, lymphocytes, mast cells, eosinophils
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