What causes excessive sweating under the armpits?
Excessive sweating under the armpits may be a normal phenomenon, or it could result from pathological causes such as malnutrition or hyperthyroidism. The specific analysis is as follows:
I. Normal Phenomenon
If an individual has naturally well-developed sweat glands, with a higher concentration of sweat glands in the armpits, increased body heat due to high temperatures or wearing excessive clothing can lead to increased sweating. If there is no unpleasant odor or other discomfort, this is generally considered normal. It can be improved by dressing appropriately and maintaining regular hygiene.
II. Pathological Causes
1. Malnutrition
An unbalanced diet may lead to insufficient intake of essential elements such as calcium and zinc. This can cause overactivity of the sympathetic nervous system, resulting in excessive sweating. Adjusting the diet to ensure balanced nutrition, or taking nutritional supplements as directed by a physician—such as vitamin D drops, calcium acetate granules, or calcium gluconate zinc oral solution—can help improve the condition.
2. Hyperthyroidism
When thyroid function is abnormal and excessive hormones are secreted, the body enters a state of high metabolism and heightened excitability, leading to symptoms such as increased sweating and emotional instability. In such cases, medications prescribed by a doctor—such as methimazole tablets or propylthiouracil tablets—may be used for treatment.
Besides the common causes mentioned above, excessive armpit sweating may also be caused by diabetes. If it significantly affects daily life, timely medical evaluation is recommended.