Greetings.
The excessive sweating in armpits is considered as primary hyperhidrosis, as there is no cause except the sweat gland in the skin are increased in size and they respond excessively to body's hormones (increased cholinergic sympathetic stimulation of the sweat glands in the axilla). But before going for any definite treatment, it is ideal to check the thyroid and adrenal gland of the body, to rule out any abnormality, as they can secondarily cause excessive sweating. Your internal medicine specialist or primary care physician would be able to get it done.
Following is the treatment protocol;
1) dietary restriction of coffee, tea, cola soft drinks, and chocolate.
2) application of aluminum chloride hexahydrate or zirconyl chloride in absolute alcohol
3) iontophoresis, done by dermatologists in their office
4) medications like atropine, propranolol
5) Botox injection
Please feel free for your follow up questions.
Dr. Arun
Doctor (MD)
MBBS, MS (General Surgery), Post-doctoral Fellowship in Sports Medicine