Hello,
From the symptoms it sounds like pityriaisis versicolor. It is a common skin infection caused by the
yeast Malassezia furfur. This skin disease commonly affects adolescents and young adults, especially in warm and humid climates.
Most cases of fungal infections respond to over-the-counter products, which contain any of several basic ingredients: miconazole, tolnaftate, terbinafine,ketaconazole and clotrimazole.