Excess sweating of the armpits is a common problem, and it can be caused by various things such as overuse (exercise or work-related stress, etc.), hormonal imbalance (thyroid disease), mental health issues like depression, anxiety, and/or panic attacks.
You may also have to deal with excessive sweating in your feet because of poor circulation. This happens when there is too little blood flow through your feet which affects the sweat glands and causes excessive sweating at this location. Medications prescribed for another condition can make you sweat more than usual – but usually only if taken long term – so it’s important to check with your doctor before changing medications.