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Causes
By Mayo Clinic staffHealthy skin may normally have the fungus that causes this disorder growing in its pores (the opening of the hair follicles). Tinea versicolor occurs when the fungus becomes overgrown. A number of factors may trigger this growth, including:
- Hot, humid weather
- Excessive sweating
- Oily skin
- Hormonal changes
- Immunosuppression — when your immune system is unable to protect your body from the growth of yeast or fungus on your skin or elsewhere
