That is an excellent question and one that is best answered by your primary care doctor
or other medical care professional after obtaining a complete history and physical examination. based upon the limited history you have provided, it is difficult to correlate the history of recent traumatic brain injury
and craniotomy with sweaty feet but of course it is impossible to know what other related issues may be causing these symptoms or related to why you are having them. It is advisable that you see a medical professional as soon as possible as he or she will be able to evaluate you and perform the appropriate diagnostic tests and depending on what he or she finds, he may recommend further testing or therapeutic options. You may consider in the short term, not wearing socks to allow your feet to air out, or using a fan or air conditioner to keep yourself cool as these might improve the sweatiness in your feet. Other medical causes of sweaty feet are outside the scope of this discussion and would be better answered by your primary care doctor.