What causes major sweating on face and head?

Excessive sweating on the face and head, also known as craniofacial hyperhidrosis, can have several causes. Here are some potential causes:

1. Primary Craniofacial Hyperhidrosis: This is a primary form of hyperhidrosis that affects the face and scalp. It is not related to any underlying medical condition and is often inherited.

2. Secondary Craniofacial Hyperhidrosis: This type of excessive sweating is caused by an underlying medical condition. Some possible causes include:

* Menopause: Hormonal changes during menopause can cause hot flashes and night sweats, which may affect the face and head.

* Hyperthyroidism: An overactive thyroid gland can increase the body's metabolism and lead to excessive sweating.

* Diabetes: Poorly controlled diabetes can cause nerve damage that affects sweat production.

* Certain Medications: Some medications, such as antidepressants and anticholinergics, can cause excessive sweating as a side effect.

* Infections: Bacterial or viral infections, such as tuberculosis or HIV, can cause fever and profuse sweating.

* Neurological Disorders: Conditions such as Parkinson's disease and multiple sclerosis can affect the nervous system and cause excessive sweating.

3. Gustatory Sweating: This is a rare condition in which sweating occurs on the face, particularly around the mouth and nose, in response to certain tastes or smells.

4. Anxiety or Stress: Emotional factors like anxiety or stress can trigger sweating, including on the face and head.

5. Certain Foods and Beverages: Spicy foods, caffeine, and alcohol can stimulate sweating in some individuals.

It's important to consult with a healthcare professional to determine the underlying cause of excessive sweating on the face and head, especially if it is sudden, severe, or accompanied by other symptoms. Proper diagnosis and treatment can help manage the condition effectively.