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Gaspari_Dermatitis_Eczema-1

Gaspari_Dermatitis_Eczema-1 - DERMATITIS AND ECZEMA ITCHING...

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Unformatted text preview: DERMATITIS AND ECZEMA: ITCHING FOR ANSWERS Anthony A. Gaspari, MD Shapiro Professor and Chair Department of Dermatology University of Maryland School of Medicine PURPOSE • Understand functions of skin • Understand inflammation in skin • Understand types of dermatitis • How it is diagnosed • How it is treated FUNCTIONS OF SKIN • Protect against infections, chemical toxins and physical agents (UV, ionizing radiation) • Prevent insensible water loss • Control body temperature (thermoregulation) • Sensation, communication (psychosocial, sexual, endocrine functions) • Self-regeneration and healing TERMINOLOGY Dermatitis = Dermat + itis refers to skin means “inflamed” (thus, inflamed skin) Other examples: arthritis, colitis, encephalitis, etc. TERMINOLOGY Eczema = Greek term “To boil over” Usually refers to severely inflamed dermatitis, and the signs and symptoms associated with such an acute process (itching, sting, burning of the skin with drainage from lesions) CARDINAL FEATURES OF INFLAMMATION • Calor (warmth) - increased blood flow • Rubor (redness) -dilated blood vessels • Dolor (pain)- irritation of nerves in inflamed tissues TYPES OF DERMATITIS • Allergic contact dermatitis • Irritant contact dermatitis • Atopic dermatitis • Other types IMPACT OF CONTACT DERMATITIS • T-lymphocyte-mediated type IV allergic reaction • Commonest specific skin disorder encountered • Second commonest dermatosis encountered in Dermatologist office • 30% of all occupational disease • USA annual cost $250 million/year COMMON ALLERGENS Nickel Jewelry, foods Benzocaine anesthetics Fragrance perfumes, personal care products Mercaptomix...
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Gaspari_Dermatitis_Eczema-1 - DERMATITIS AND ECZEMA ITCHING...

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