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.
Vitamin B12. Like vitamin D, one study found that vitamin B12 deficiencies were more common in people with psoriatic arthritis than those without it. But again, like vitamin D, B12 doesn't seem to be a primary treatment option, says Dr. Fiocco, who is also the director of rheumatology at Scott & White, in Temple, Texas.