Thanks for the query. Fungal infection is becoming an increasing problem due to rampant usage of antifungals. Please see a dermatologist as some extra medications are coprescribed many a times to treat. If needed a simple skin test can also be done. Till then use only OTC anti-allergic medications to control itching. Personal hygiene should be good. Wear loose fitting clothes.
Next Steps
You can meet a qualified Dermatologist with MD/DNB/DDVL/DVD degree for proper examination.
Health Tips
You can consult me online for personal recommendations.