eczema and hair and nails Flashcards
AD caused by
Caused by skin barrier dysfunction AND immune dysregulation
“Allergic March”
progression from AD to allergic rhinitis to asthma
risk factors for AD
fillagrin gene, family hx
80% of childhood AD does not persist past the age of
12
TCS in AD, s/e
Suppress inflammation, BID. Children have a higher BSA:Weight ratio ➡ higher degree of absorption• Striae • Cataracts • Adrenal insufficiency • Growth Delay in Children • Osteoporosis
TCI
2nd line, Pimecromilus (Elidel) BID x 6 weeks for > 2 years. Tacrolimus 0.03 > 2, 0.1 > 16
Eucrisa
BID > 2 years, can burn on application, wet wrap
Dupilimumab
- IL-4 & IL-13 (1+3=4) receptor antagonist (inhibits IL-4 & IL-13 signaling)
- 12 years and older
- No labs required
- Not an immune suppressing medication
- Loading dose then every other week dosing
Irritant Contact Dermatitis (ICD)
burning, stinging, pain
immediate
• 80% of occupational contact dermatitis cases are localized to area of exposure
• Most frequent cause of hand dermatitis (”wet work”)
Allergic Contact Dermatitis (ACD)
- IMMUNE MEDIATED!
- Delayed-type hypersensitivity reaction- Requires sensitization!
- 20% may initially present as localized eruption but then become generalized
- T-cell mediated reaction elicited by contact with a previously sensitized chemical agent
- The dominant symptom is PRURITUS!
- Reaction typically occurs 48-72 hours after exposure
Onychomycosis- management
oral terbinafine is first line, if they dont want systemic - cicloperox or kerydin, topical urea
terbinafine and dose
Continuous: 250mg/day 12 wks for toenails,
6 wks fingernails, LFT’s/CBC baseline; repeat at 6wks
s/e terbinafine
Elevated LFT’s, taste disturbance, exacerbation of psoriasis, headache, dizziness, contraindicated with statins or excessive alcohol
fluconazole dose
Pulsed: 150mg
1 day/week for 9 months, good for yeast, interacts with many drugs
Itraconazole dose
200mg day 12 wks for toenails
6 weeks for fingernails Contraindicated w/meds metabolized through CYP-450 Many drug interactions Take with a full meal