Psoriasis

Psoriasis is an autoimmune condition causing systemic inflammation that results in red patches of skin that may have silver scales and itching. According to Psoriasis.com, 1 out of 3 people with psoriasis will also experience joint symptoms, which is referred to as psoriatic arthritis.1 It can also affect the nails resulting in abnormal nail growth and pitting. Skin cell growth is accelerated with this condition causing skin to pile up in patches rather than shed. It commonly occurs on the torso, elbows, scalp and knees. 

A study found a higher incidence of migraine in psoriasis patients (3.3%) than in the control group (2.9%).2