Dermatology Flashcards
1
Q
Psoriasis features?
A
Well defined Scaly surface - red Adults Unknown cause Trunks, limbs, knees Scalp and nails Psoriatic arthritis
2
Q
Eczema features?
A
Poorly defined Red without scales Children Allergens Face, hands NOT scalp and nails No arthritis
3
Q
How to differentiate psoriasis and eczema?
A
Psoriasis = scalp and nails, red with scaly surface
4
Q
Psoriasis aetiology?
A
HLA association
T-cell mediated
Keratinocyte proliferation early
5
Q
Eczema aetiology?
A
No HLA association Uncertain cause IgE Skin barrier permeable Atopic eczema: type 1 Allergic contact dermatitis: type 4 Hyperkeratosis late
6
Q
Psoriasis tx?
A
Reduce keratinocyte proliferation: - Vit D - Coal tar - Dithranol - Retinoids Immune suppression: - Steroids - Methotrexate - Biologicals: TNF blocker
7
Q
Eczema tx?
A
Identify triggers Emolient cream Topical steroids Antihistamine for itch Antibiotics if infected
8
Q
Oral manifestations of skin disease?
A
Lichen planus
Herpes infections
Blistering conditions
9
Q
Lichen planus features?
A
Itchy, papular rash Flexor surfaces, mouth and genitalia White patches in mouth Brand like T cell infiltrate Saw-shaped rete ridges
10
Q
Characteristics of herpes?
A
Blistering (that form ulcers) and sore
Afterwards = post hepatic neuralgia
Chicken pox
Herpes zoster (shingles - chest and back - 1 side of midline)
