Rise at any age, small plaque psoriasis often arises in those over than 40 years of age. This type of psoriasis often responds well to phototherapy. Small plaque psoriasis other types of plaque psoriasis uncommon subtypes or descriptions of chronic plaque psoriasis include: rupioid psoriasis: limpet-like cone-shaped hyperkeratotic lesions of psoriasis lichenified psoriasis: chronically rubbed or scratched areas of psoriasis that have become very thickened elephantine psoriasis: very persistent, very thickly scaled, large areas of psoriasis ostraceous psoriasis: very thickly scaled, ring-like areas of psoriasis, resembling an oyster shell linear psoriasis: psoriasis arranged in lines along the body (often corresponding to fetal developmental lines) koebnerised psoriasis: psoriasis developing within an area of skin trauma such as injury, infection, surgical wound or scratch mark. Photosensitive psoriasis: psoriasis worst in the sun-exposed areas of the face, neck, hands and forearms most patients with psoriasis find ultraviolet light very helpful for their psoriasis. A small group experience exacerbations of their rash following sun exposure. In these people sometimes clear 'sunburn' lines are seen. They may also have typical plaque psoriasis elsewhere. Strict sun protection, usually in combination with other treatment, is required to control this type of psoriasis. generic viagra Lichenified psoriasis ostraceous psoriasis elephantine psoriasis linear psoriasis following lines of blaschko koebnerised psoriasis following shingles photosensitive psoriasis following mild sunburn uncommon forms of plaque psoriasis more images of plaque psoriasis... Assessment of plaque psoriasis patients with chronic plaque psoriasis should be assessed by a dermatologist. Factors considered may include the following. Age of onset of psoriasis current age and gender sites affected by psoriasis sy.