Sweat rash itself is not contagious and will not be transmitted to children. If it is combined with tinea cruris caused by fungal infection, it is easily contagious. The cause of herpes sweat is not completely clear and may be related to sweaty hands and feet, exposure to chemicals, emotional stress, irritability, anxiety, easy recurrence, and may also be related to genetic factors. It is not contagious and cannot be transmitted to children through contact in life, so there is no need to worry excessively. After the appearance of sweat rash, you need to avoid the above-mentioned triggering factors, avoid wet and sweaty hands and feet, avoid contact with chemical agents, avoid anxiety, pay attention to the care of the skin on the hands, and when there is flaking, you can give glucocorticosteroids topical application, while using a mild moisturizing product topically. For those with obvious itching, oral antihistamines can be given to relieve itching, such as loratadine tablets.