Why do heat rashes develop on the hands?

The main causes of developing prickly heat on the hands include the following: 1. Humid and hot environments: In high temperature and humid conditions, the body tends to sweat easily. If sweat cannot be excreted effectively, prickly heat may develop. Prolonged exposure to such hot and humid conditions may worsen this situation. 2. Clothing factors: Wearing tight-fitting or poorly breathable clothing can cause frequent friction between the skin and clothing, and hinder sweat evaporation, thereby triggering prickly heat. 3. Prolonged water exposure: Hand-related household activities such as laundry or dishwashing may lead to prolonged immersion of the hands in water, which can easily damage the skin's surface layer and result in prickly heat. 4. Over-cleansing: Excessive use of cleaning products, such as soap and hand wash, may damage the protective layer of the skin on the hands, increasing the risk of developing prickly heat. 5. Allergic reactions: Some individuals may be allergic to certain foods or medications, which could also trigger the development of prickly heat on the hands. If necessary, medication may be used under a doctor's guidance.