How can I reduce inflation and allergy and heat from my body ? - #9158

This issue started after May 2023 and lasted until October. Initially, I thought it was heat rashes, so I used Dettol while bathing, but it didn’t help. I kept feeling itching and a needle-like sensation inside my skin, along with excessive sweating. Later, I tried Candid powder, but it didn’t work either. Over time, small acne appeared on my back. I consulted a general doctor who prescribed a lotion, which provided some relief, but the itching persisted. Then, I visited an Unani (Ayurvedic) doctor, took medicines for a month, but saw no improvement. Surprisingly, as winter arrived in November, my condition improved, and I was fine. In June 2024, the itching returned, mainly on my back in the afternoon, and I realized it was the same allergy or prickly heat. I took Unani medicines for four months but saw no relief. It became very painful whenever I sweated or my body generated heat. Again, as winter came, I got better. Now in 2025, I have started working out, and whenever my body heats up, I feel mild needle-like sensations. I know summer is approaching, so what should I do now? Please suggest a solution.