Psoriasis Flashcards
Definition of psoriasis?
Auto-immune condition characterised by hyperproliferation of keratinocytes
Risk factors for psoriasis?
PMHx/FHx of psoriasis Triggers - stress - smoking - alcohol
Nail signs of psoriasis?
Onycholysis
Pitting
Subungual hyperkeratosis
Psoriatic arthritis features?
Symmetrical polyarthritis (≥4 joints simultaneously)
Onycholysis differential diagnoses?
Psoriasis
Fungal infection
Trauma
Thyrotoxicosis
Psorasis skin lesion characteristics?
Purple, silvery plaques
Dry, flaky skin
Itchy/painful
Distribution (extensors/scalp)
Psoriasis subtypes?
Plaque Pustular/palmo-plantar Guttate Flexural Erythodermic
Which subtype of psoriasis requires hospitalisation?
Erythrodermic psoriasis
Features of plaque psoriasis?
Most common, typical psoriasis CXs
Pustular/palmo-plantar psoriasis features?
Plaques/pustules on palms/plantars
Features of guttate psoriasis?
Raindrop plaques
Often 2 weeks post-Strep
Features of flexural psoriasis?
Occurs in body folds (e.g. axilla, groin, peri-anal area)
Features of erythrodermic psoriasis?
Systemic body redness and inflammation
- often with temperature dysregulation, electrolyte imbalances
Requires hospitalisation
Distribution of lesions characteristic with psoriasis?
Extensors
Scalp
