Diagnostic criteria
Generalised Pustular Psoriasis
- Primary, sterile, macroscopically visible epidermal pustules on non-acral skin (excluding cases where pustulation is restricted to psoriatic plaques)
- With or without systemic inflammation
- With or without plaque psoriasis
- Either relapsing (>1 episode) or persistent (> 3 months)
Palmar Plantar Pustulosis
- Primary, persistent (> 3 months), sterile, macroscopically visible epidermal pustules on palms and/or soles
- With or without plaque-type psoriasis
Acrodermatitis Continua of Hallopeau
- Primary, persistent (> 3 months), sterile, macroscopically visible pustules affecting the nail apparatus
- With or without plaque psoriasis
