Clinical
appearance
•
Well-demarcated plaques
•
Topped by silvery scales
Clinical varieties
•
Psoriasis vulgaris
o
Lesions sharply defined, raised, erythematous with silvery white
scales
o
Common on knees and elbow
o
Auspitz’s sign
• Psoriatic keratoderma
o
Severe plaques
o
HK, erythema and deep fissures
• Pustular psoriasis
o
Generalised
-
Small, sterile, yellowish pustules develop on erythematous background
-
Rare, can be fatal
o
Palmoplantar
-
Discoid, red and scaly lesions with small pustules
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