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A variety of factors -- ranging from emotional stress and trauma to streptococcal infection -- can cause an episode of psoriasis. Recent research indicates that some abnormality in the immune system is the key cause of psoriasis.
It is believed that these toxins may be a cause of psoriasis. Ad. There is little evidence linking liver function to the skin condition psoriasis. Those who consider it a possible trigger may recommend cleansing the body through vitamin and natural food therapy.