Abstract In the 19th century when arsenic was recommended treatment for psoriasis, little consideration given to toxic side-effects of potent carcinogen. Thomas Girdlestone, an English physician, is said have been first advocate use treat psoriasis. Girdlestone prescribed Fowler’s solution, a solution potassium arsenite 1%. 1876, Alexander John Balmanno Squire inadvertently discovered dithranol...

Between 50 % and 80 % of patients with psoriasis have involvement of the scalp. The clinical presentation of scalp psoriasis can be very varied, with disease severity ranging from mild to extremely severe.The disease may have a major psychological impact. Treatment should be tailored to each individual in order to achieve a good clinical response or blanching that lasts for as long as possible,...