Exam 1 derm etiologies & hormones Flashcards
effect on skin norepinephrine
profuse sweating
effect on skin excess thyroid hormone
warm, moist skin, pretibial myxedema
effect on skin hypothyroid
dry, cool, thickened skin
effect on skin parathyroid hormone
metastatic calcification
effect on skin growth hormone
epidermal hyperplasia, hyperpigmentation
effect on skin glucocorticoids
cushing’s sxs - striae, atrophy, purpura, steroid acne, hirsutism, moon face, buffalo hump
effect on skin adrenocorticoids
addison’s - hyperpigmentation especially in gingiva due to melanocyte stimulation
effect on skin androgens
excess sebum, acne, alopecia, hirsutism, testosterone/DHT
etiology: dermatitis herpetiformes
deposition of IgA in dermal papillae
etiology: porphyria cutanea tard
common porphyria. a/w ingested estrogen, liver dx, hepatitis
etiology: erythema migrans
tick: b. burgdorferi
etiology: cellulitis
staph or group A strep
etiology: folliculitis
plugging of hair follicles w/ sebum, pus commonly a/w staph
etiology: erisipelas
superficial cellulitis due to beta hemolytic strep
etiology: discoid lupus
sun exposed area. may be a/w systemic lupus (SLE)
etiology: herpes simplex
HSV1 oral, HSV2 genital
etiology: herpes zoster
shingles, varicella zoster virus
etiology: varicella
chicken pox, varicella zoster virus
etiology: scabies
mites
etiology: insect bites
insects. duh.
etiology: molluscum contagiosum
poxvirus
etiology: hand, foot & mouth
coxsackie A16 virus
etiology: roseola infantum
herpesvirus 6 & 7
etiology: rubella (german measles)
rubella virus
etiology: erythema infectiosum (fifth’s disease)
parvovirus B19
etiology: rubeola
paramyxovirus
etiology: rosacea
adult acne, many causes
etiology: acne
puberty, obstruction of sebaceous follicles, can be androgen dependent
etiology: tinea versicolor
p. ovale or yeast, high humidity, cortisol, or sebum
DERMATOPHYTES
etiology: tinea corporis
e. floccosum/t. rubrum (DERMATOPHYTES)
etiology: tinea cruris
t. rubrum (DERMATOPHYTES)
etiology: tinea pedis
t. rubrum (DERMATOPHYTES)
etiology: impetigo
staph aureus, pyogenes. (BACTERIAL)
etiology: psoriasis
chronic skin disease, sometimes a/w autoimmune
etiology: pityriasis rosea
unknown
etiology: seborrheic dermatitis
likely p. ovale. common chronic inflammatory dermalogical condition
etiology: contact derm
allergic: delayed sensitivity
irritant: repeated exposure
etiology: atopic eczema
a/w atopic triad: atopic dermatitis, asthma, allergic rhinitis
etiology: mycosis fungoides
cutaneous t-cell lymphoma
etiology: malignant melanoma
melanocyte mutation. can metastasize
etiology: squamous cell carcinoma
cancer. can arise from actinic keratosis or leukoplakias
etiology: basal cell carcinoma
most common skin cancer. forms in basal layer of epidermis
etiology: actinic keratosis
due to sun exposure. benign
etiology: keratoacanthoma
rapidly growing neoplasm of epithelium
etiology: seborrheic keratosis
benign hyperpigmented lesion from epidermal hyperplasia
