This is limited details and more precise information is needed about your skin condition which can help in planning a treatment. A thorough history, clinical examination will be needed to solve the mystery. Consider seeing a Dermatologist for proper diagnosis and treatment plan. It appears as sensitivity to sunlight or a superficial fungal infection that can be confirmed during consultation.
Next Steps
Your dermatologist will decide a treatment plan for you after a consultation.
Health Tips
Avoid Self Medications.