What is psoriasis?

Psoriasis is an autoimmune disease characterised by elevated regions of abnormal skin that is long lasting and non-contagious. 

The five primary types of psoriasis are:

• plaque
• guttate: lesions over the upper body and proximal extremities, 
• inverse: folds, recesses, and flexor surfaces of the body
• pustular: pus filled skin
• erythrodermic; affects all the body ,

What are the signs and symptoms of psoriasis?

• itchiness
• scaly skin patches
• red (purple on darker skin) 

What are the causes of psoriasis?

• genetic disease triggered by environmental factor
• lifestyle: persistent infections, stress, and seasonal and climatic variation