Dermatology Flashcards
What treatment is given to the immunocompromised person with chickenpox?
Oral acyclovir 20 mg per kilogram five times a day, given in the first 24 hours
What is a hallmark sign or symptom of scabies?
Linear or curved burrows or snake-like lesions
Which measles infection is the German measles?
Rubella
What is a particular risk in young children with burns?
Hypothermia
What skin condition typically follows a recent URI, is more common in females than males, and last three to eight weeks?
Pityriasis rosea
What laboratory studies are elevated with atopic dermatitis?
Serum IgE and maybe eosinophilia
What skin condition is defined as a benign hyperproliferative inflammatory skin disorder
Psoriasis
What skin condition is characterized by a herald patch?
Pityriasis rosea
Describe stage 3 of Lyme disease
Joint and periodicular pain, subacute encephalopathy, acro dermatitis chronicum atrophicancs (localized DIC of the extremities)
What topical steroids are good for the treatment of psoriasis?
Betamethasone 0.05% or triamcinolone 0.5%
What is the diagnostic criteria of Lyme disease?
Exposure to tick habitat within the last 30 days with erythema migrans or one late manifestation and laboratory confirmation
What should not be placed on burns?
Lotion, paste, or ointments
How long is a child contagious with fifth disease?
The child is contagious until the fever is gone
Morphology: a large, raise lesion filled with serous fluid, blood, and pus; crosses multiple skin layers?
Cyst
Morphology: a lesion raised above the surface and extending a bit below the epidermis?
Wheal Ex: uticaria, mosquito bites, PPD test
Describe the distribution of chickenpox
Papules usually develop on trunk then spread to scalp and face
Three categories of burns?
First degree, second degree or partial thickness, and third degree or full thickness
Morphology: a small, flat discoloration?
Macule Ex: freckles or moles
What is the typical symptom presentation of rubeola?
Fever, runny nose, cough, with Koplik’s spots Followed by outbreak of rash
Morphology: a small, less than 1 cm lesion filled with serous fluid?
Vesicle Example: HSV, herpes zoster
What is the management of molluscum contagiosum?
Resolves spontaneously if left alone
What viral skin infection is also known for causing peeling or loss of the nail?
Coxsackie virus or hand foot and mouth disease
How long must ticks feed in order to transmit Lyme disease?
24 to 36 hours
what is an acute, contagious disease caused by herpes virus, transmitted by direct contact with lesions or airborne
Varicella zoster virus or chickenpox
Configuration: circular, beginning in the center and spreading to the periphery
Annular
What are Koplik’s spots?
White dots in the back of the mouth near the molars characteristic of rubiola
If a diaper rash has erythema and papules what can be used?
1% hydrocortisone
What skin condition is a pruritic rash in a Christmas tree pattern?
Pityriasis rosea
What is the treatment for pinworms?
Pyrantel is OTC and mebendazole as a prescription
How long does the fifth disease rash last?
Up to 1 month
What form of tinea presents in erythematous rings?
Corporis
What is the systemic management of impetigo?
Augmentin or cephalexin
Morphology: and elevated, firm lesion greater than 1 cm; corsses multiple skin layers?
Nodule Example: fibroma
How long does a child with impetigo need to stay away from school?
48 hours after treatment
What viral infection affects the salivary glands causing parotitis?
Mumps
If not responsive to benzoyl peroxide what is the next topical treatment for mild acne?
Retinoic acid 0.025% to 0.1%
What age can you begin using the rule of nines?
9 years old
What is the primary treatment of tinea capitus?
Griseofulvin x6 weeks.
What is known to be an exacerbation of acne?
Steroids and anticonvulsants
Morphology: a small less than one centimeter, elevated, firm skin lesion?
Papule Ex: bug bite, wart
What distinguishes rubella from rubeola?
Rubella typically only lasts 3 days and is less intense
How does the rubeola or measles rash spread?
Cephalocaudal
What three systemic medications are used in the treatment of moderate acne?
Doxycycline 100 mg 2 times per day, erythromycin 1 g in 2 to 3 divided doses if caused by staph infection, and monocyclin 50-100 mg twice daily
What is the difference between a primary lesion and a secondary lesion?
Primary is first appearing, and secondary follows primary lesions related to scratches and/or infections
What is the management of scabies?
Permethrin 5% repeated weekly in order to kill newly hatched bugs as the permethrin can’t kill the eggs
What skin condition is defined by red, sharply defined plaques with silvery scales?
Psoriasis
Morphology: serous fluid-filled vesicles greater than 1 cm?
Bulla Ex: Burns, blisters, contact dermatitis