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.
In some cases, psoriasis can also cause swelling and pain in the joints and spine, a condition known as psoriatic arthritis. Drugs that are put on the skin or those in pill form can help relieve symptoms of psoriasis and psoriatic arthritis, but they donât work for everyone.