Generally speaking, the vertical axis of a tropical cyclone, usually defined by the location of minimum wind or minimum pressure. The cyclone center position can vary with altitude. In advisory products, refers to the center position at the surface.
Facts on vitamin A and psoriasis. 1  Vitamin A can be very effective in treating psoriasis. 2  Creams and tablets can be prescribed. 3  High doses of Vitamin A should only be given under specialist supervision.  A combination of Vitamin A and phototherapy (light treatment) can give excellent results of most patients.
Many people with psoriasis notice an improvement in their skin after they have been in the sunshine. The use of the sunâs rays has been used to treat psoriasis for over a century, however, of the many different ultraviolet rays emitted by the sun, only UVA and UVB are helpful to people with psoriasis.