Q. Is there any relationship between hypothyroidism and excessive sweating (particularly facial) in pre-teens?

A. Hypothyroidism, underactive thyroid gland, is one of the most common metabolic conditions. The thyroid regulates metabolism and affects all organ systems in the body. Underactive thyroid is diagnosed by a blood test, and causes symptoms such as fatigue, weight gain, dry skin and hair, constipation, and more. Sweating would likely be less than normal, not more. The symptoms you refer to may be overactive oil glands in the skin rather than sweating.

Once the diagnosis of hypothyroidism is made, treatment is accomplished by giving thyroid hormone replacement. Regular blood measurements of TSH, the regulatory hormone from the pituitary, are commonly taken to monitor the dose of thyroid replacement.

http://www.nlm.nih.gov/medlineplus/ency/article/000353.htm

http://www.gpnotebook.co.uk/ID=1174798342.htm

http://www.mayoclinic.com/invoke.cfm?id=DS00353&

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