In the summer season, some people have prickly heat in which there are skin rashes due to sweat and heat. This skin problem affects people of all ages, both young and old. Hot and humid climate is the main cause of prickly heat. This type of climate causes excessive sweating and blockage of sweat glands, leading to skin rashes. Bacterial infection can also cause this skin problem. The main symptoms of prickly heat are a feeling of prickling and stinging with the formation of red rashes that look like bumps. There is inflammation and itching in these rashes. The problem is cured by itself when the weather improves. 20 home remedies for prickly heat rashes are as follows.