I think you have CRP - Confluent and Reticulated Papillomatosis
Hello,
From the symptoms it looks like pityriasis versicolor. Tinea versicolor 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.
Treatment involves topical and oral antifungal medicines. Most cases respond to over-the-counter products, which contain any of several basic ingredients: miconazole, tolnaftate, terbinafine,ketaconazole and clotrimazole. You can consult a pharmacist and get any cream or lotion containing these ingredients. If the symptoms persist then oral antifungals may be needed. A dermatologist’s consultation will be the best.