Frequent use of heating pads, hot baths, and/or ice packs can cause the skin in your feet to sweat. This is known as hyperhidrosis (excessive sweating).
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WHAT IS HYPERHIDROSIS?
Hyperhidrosis or excessive sweating occurs when there is too much moisture on the surface of the skin. Sweat glands produce an excess amount of fluid that causes it to be absorbed into the bloodstream through tiny capillaries in the area under your feet. The increased blood flow causes swelling and inflammation beneath your soles and toes and may cause other symptoms such as chills, fever, fatigue, headaches, muscle aches and pains—even mood swings! Hyperhidrosis is often referred to as “sweating like a pig” because many people who suffer from this condition report having a very sweaty foot odor at times. Because hyperhidrosis affects areas where you walk most frequently (your feet), you experience these symptoms more than any other body part including hair follicles or armpits; however, it should be noted that not everyone with hyperhidrosis will have visible signs of excessive sweating; some people appear completely dry while others may show only subtle changes such as redness around their ankles over time (see Figure 23-3A). For example: If you sweat excessively but do not notice any noticeable signs except when wearing something particularly warm or when standing for long periods in uncomfortable shoes perhaps due to being