PSORIASIS

PSORIASIS is a non infectious chronic inflammatory disease of the skin ,characterized by well defined Erythematous plaques with silvery scales .

PSORIASIS may  start at any age but is unusual before the age of 5 and the oldest recorded onset was In a patient aged 107.

FACTORS CAUSING FLARE UP OF PSORIASIS

TRAUMA :when the condition is erupting ,lesions appear in area of skin damage such as scratches or Surgical wounds (KOBNER PHENOMENON)

INFECTIONS: beta haemolytic streptococcal throat infections often preced guttate psoriasis.

SUNLIGHT :rarely UVR may  worsen psoriasis

DRUGS:Antimalarial, beta adrenoreceptors antagonists (BETA BLOCKERS) and lithium May worsen psoriasis.

EMOTIONS:Anxiewty precipitates some exacerbation 

TYPES OF PSORIASIS

STABLE PLAQUE PSORIASIS:Scalp (60%)patients with psoriasis,well demarcated easily palpable Area ,in palms its difficult to recognize as individual plaques may be poorly demarcated.

GUTTATE PSORIASIS:Mostly commonly seen in childrens and adolescents and may follow Streptococcal sore throat ,lesions are droplet shaped ,majority will develop plaque psoriasis Later in life.

ERYTHRODERMIC PSORIASIS :Skin become universally red with hypo or hyperthermia.

PUSTULAR PSORIASIS:Generalised rare but very serious onset ,sudden with large no of small Pustules erupting on red base ,with swinging pyrexia coinciding with new pustules ,primarily Affects palms and soles.