Heredity: A genetic predisposition is what leads to the skin condition called psoriaisis. Certain drugs such as lithium can aggravate psoriaisis. In a few cases it can be associated with a strep throat or food allergy. These are triggers which worsen the psoriasis in susceptible individuals.
Answered 3/19/2017
6.3k views
Autoimmune disease: Unfortunately it is an autoimmune disease manifested by antibodies directed against the skin and underlying structures.
Answered 3/19/2017
5.4k views
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