Contact dermatitis
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Summary of Contact dermatitis
Contact dermatitis is a type IV (delayed) hypersensitivity reaction resulting in an erythematous, pruritic, oozing, vesicular skin rash. It results from either exposure to allergens (allergic contact dermatitis) such as poison ivy or irritants (irritant contact dermatitis) such as detergents.
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Pathology
Integumentary system
Pigmented skin disorders
Acneiform skin disorders
Papulosquamous and inflammatory skin disorders
Keratotic skin disorders
Vesiculobullous skin disorders
Desquamating skin disorders
Skin integrity disorders
Skin infections
Cellulitis
Erysipelas
Impetigo
Necrotizing fasciitis
Human papillomavirus
Varicella zoster virus
Poxvirus (Smallpox and Molluscum contagiosum)
Coxsackievirus
Herpes simplex virus
Candida
Malassezia (Tinea versicolor and Seborrhoeic dermatitis)
Pediculus humanus and Phthirus pubis (Lice)
Sarcoptes scabiei (Scabies)
Human herpesvirus 6 (Roseola)
Parvovirus B19
Varicella zoster virus
Measles virus
Rubella virus
Skin neoplasms
Hair and nail disorders
Integumentary system pathology review
AssessmentsContact dermatitis
Contact dermatitis
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Flashcards
Contact dermatitis
9 flashcards
Questions
USMLE® Step 1 style questions USMLE
7 questions
USMLE® Step 2 style questions USMLE
8 questions
Preview
A 17-year-old man comes to the clinic with a pruritic rash.He says that he noticed a vesicular rash on his arm after walking in the forest with his friends. His temperature is 37.1 oC, pulse is 80 /min, respiratory rate is 12/min, and blood pressure is 110/75 mmHg. Physical examination shows clear fluid filled vesicles on his arm in a linear pattern. He does not have stridor and air entry is good bilaterally. He is up-to-date on his immunizations and does not have any allergies. He does not smoke and does not drink alcohol. Which of the following is the most likely explanation for this patient's physical findings?
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