This sounds like Hyperhydrosis. It is estimated that 5% of the worlds population has this very problem. Its exact cause is unknown, although many think it to be inherited. What we know for sure is that excessive sweating of feet contained in a dark and enclosed spot (your shoes) for long periods of time can lead to skin breakdown, infections, and create a perfect storm environment for bacterial and fungal growth. The byproducts of these microbial organisms can smell bad.
So what can you do about it?
Wash your feet at least twice/day, then apply talcum powder or corn starch. If you have athlete's foot, then also use an over-the-counter anti-fungal medication. Wear absorbant socks. Wicker (acrylic) socks or cotton (changed frequently) would be helpful, too.
More Aggressive methods:
If that does not work, then visit your podiatrist or dermatologist. Other treatment modalities involve oral anticholinergic and/or anti-anxiety medications (needs physician monitoring), electrical currents (iontophoresis), clinical strength antiperspirants, and botox.
Going Overboard: Other more aggressive methodologies such as sympathectomy (cut the sympathetic nerve that innervates sweat glands) or a particular laser treatment that destroys (ablates) the odor causing glands. Both of these methods have high degrees of risk, however, for other side effects that might be worse than the hyperhydrosis itself. I would therefore not recommend them.
The Organic Proponents: As always, there are alternative methods of medicine that may claim to treat this condition, but probably have very limited applications.
Bottom Line: In almost all cases, the practical solutions will be quite sufficient, but if they are not, seek out a physician well-versed in these areas.
To your good foot health,
Dr. Joel C. Rutherford, DPM
Some healthcare providers have never used or heard of DrySol, so make sure you bring your request to them. A package insert or internet information will guarantee your podiatrist can prescribe it for you.
Rod Tomczak, MD, DPM, EdD
1. Pour 30 ml of Apple Cider Vinegar + 1/2 gallon of warm water in a pan and soak the feet for approximately 10-15 minutes.
2. Pat dry.
3. Next, apply, either Secret Clinical or Degree or Dove strength antiperspirant to the bottom of the feet and between the toes daily until the pores sweat less and/or the odor has resolved. Drysol Antiperspirant may cause skin irritation or a rash in individuals who may be allergic to aluminum salts.
4. Another excellent product Certain Dri Roll On Antiperspirant can be applied daily for the treatment of sweaty feet.
5. Make sure to wear cotton or microfiber socks, wear shoes made of leather and avoid wearing plastic and non-man made shoes.
6. Inspect the feet daily for redness, drainage, open sores, change in color, change in temperature, swelling or any other signs of inflammation.