Warm and swollen hands may be a normal physiological phenomenon, or it may be caused by edema, trauma, infection and other diseases. 1. Normal physiological phenomenon: If you use your hands to touch spicy food for a long time, or rub your hands for a long time, it may lead to the expansion of blood vessels due to heat, which may lead to the problem of hot and swollen hands, so you don’t need to worry too much. 2. Trauma: In case of trauma to the hands, the local tissues may become congested, leading to the problem of hot and swollen hands, and it is usually enough to treat the trauma. 3. Inflammatory infections: in the case of inflammatory infections, the release of inflammatory factors can cause heat, which will increase the probability of hand fever and swelling. It should be noted that the cause of fever and swelling of the hands may also have diabetes, peripheral neuropathy, etc., so in the exclusion of physiological factors, should be diagnosed by a doctor, by the doctor to clarify the cause of the disease after the development of a scientific treatment program, and then carry out the treatment.