*Psoriasis Flashcards
(4 cards)
1
Q
Etio of psoriasis
A
- Immune mediated
- 1 parent - 25% chance
2 parents - 65% chance - Starts at any age group
2
Q
c/f of psoriasis
A
- Red patch with silvery scales
- KOEBNER Phenomenon - rash on minor trauma
- Extensor surface of elbow/knee
- Not itchy normally
- Painful arthropathy can be +
- Pin point bleed below scales - AUSPITZ sign
- Nail - pitting, lifting (onycholysis), hyperkeratosis.
DD- Fungal infection of nails
Dxt - Nail clippings CULTURE
3
Q
Factors triggering psoriasis
A
- Infections - strep
- Trauma/stress
- Sunburn
- Puberty/menopause
- HCQ, lithium, OCP, B-blockers, NSAIDs
4
Q
*Mx of psoriasis
A
Clinical dxt, biopsy for confirmation
Rx:
1. Tar preparations - not used nowadays
2. Steroids topical - main
3. Calcipotriol (vit D derivative)
4. Sorbelene with 10% glycerine
Chronic plaque:
1. Sterois cream - mod to high potent 2-6wks
If not enough
2. Calcipotriol + betamethasone (potent steroid)
Face/Scalp psoriasis:
Steroid lotion .. coal tar shampoo for maintanence
Elbow/axilla fold:
Prednisolone cream
Nail psoriasis
Calcipotriol + potent steroid
UVB therapy, methortrexate
Dithranol 1% + Salicylic acid 1% for 30mins on plaques
