White spots have several causes. Some are listed below:
Vitiligo is irregularly-shaped white patches of skin that dont tan. It is caused by a condition that causes melanocyte cells in the affected area to degenerate and die off. Your physician can help reverse the effects of vitiligo.
Tinea Versicolor, or sunspots is dandruff-like fungus that flakes off the scalp onto the upper body. This condition is very common and has nothing to do with cleanliness. Extra-strength dandruff shampoo is often used to treat it.
Pressure Points are seen on skin surfaces that contact the equipment, such as shoulder blades, the backs of calves or upper arms. To avoid this, shift your position carefully during the session so that all skin receives oxygen.