Excessive sweating is also called hyperhidrosis, and may occur anywhere on your body, including your head and scalp. The causes of excessive head sweating include changes in your hormones, chronic health conditions and certain lifestyle factors. Consider this information from the Mayo Clinic and the National Library of Medicine about the causes of excessive head sweating.
If you spend a lot of time outdoors in hot weather, you may experience excessive sweating on your head as as a result of heat rash on your scalp and body.
Frequently skipping meals can result in low blood sugar, which may cause you to have excessive sweating on your head and body.
You may have excessive sweating on your head as well as hands and underarms as a result of anxiety, especially before a stressful event.
Overactivity of your thyroid may cause you to have excessive head sweating as a result of an increased internal body temperature.
Excessive sweating on your head may be a symptom that you are having a heart attack, especially if accompanied by other symptoms such as chest pain.
If you are a woman going through menopause, your hot flashes may cause you to have excessive sweating on your head.
If close relatives such as your parents or siblings also experience excessive sweating, you may be predisposed to excessive sweating as well.