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.