What Causes Psoriasis

No-one quite knows exactly what causes psoriasis, although genetics are believed to be a factor. The general consensus is that the immune system also plays a huge part, with the immune system somehow triggered to produce more skin cells than is normal.

People who don’t suffer with psoriasis will produce mature skin that sheds itself within 28-30 days, psoriasis sufferers however will produce mature skin within 3-4 days. Unlike normal skin cell production though which falls off, psoriasis cells pile up, forming lesions on the surface (see diagram above, to the right).

Psoriasis can also be triggered by a number of other factors such as: -

The weather – Cold, dry weather can flare up psoriasis while warm damp or sunny temperatures can make symptoms better.

Stress – Stress or emotional distress can trigger psoriasis flare ups.

Skin infection – Skin infections caused by viruses or bacteria can trigger psoriasis and cause flare up.