Most people get tinea versicolor when they are teenagers or young adults. It is rare in the elderly and children, except in tropical climates where it can occur at any age. Both dark and light skinned people are equally prone to its development. People with oily skin may be more susceptible than those with naturally dry skin.
The yeast is normally present in small numbers on everyone’s skin. Anyone can develop an overgrowth of yeast. During the summer months when the temperature and humidity are high, the yeast can increase. The excess yeast on the skin prevents the normal pigmentation process, resulting in light and dark spots. In tropical countries with continuous high heat and high humidity, people can have these spots year round. In other climates, the spots generally fade in the cooler and drier months of the year. Why some people get tinea versicolor and others do not is unclear.
In tropical countries with continuous high heat and high humidity, people can have these spots year round. In other climates, the spots generally fade in the cooler and drier months of the year.