What Causes Excess Sweating?

Excess sweating in your feet, hands and armpits can be caused by many factors. Sometimes excess sweating is due to an underlying condition like hyperhidrosis (excessive underarm perspiration). But most of the time it’s because you’ve got something wrong with your sweat glands or nervous system.

What are the symptoms of hyperhidrosis?

You may notice that there’s more sweat on your palms than usual, which makes typing difficult, especially when using a keyboard for long periods. You might also find that you get sweaty around the middle of your back or underarms; these areas will be covered in wet spots if too much heat builds up underneath them. The skin around these areas will become thicker and darker than normal as well – this is known as ‘hyperpigmentation’.

What causes excessive sweating?

Hyperhydrosis (a medical term given to excessive sweating) occurs when there is an abnormal amount of secretions from eccrine ducts within hair follicles or sebaceous glands at other sites such as armpit sweat gland ducts.[1] These secretions build up inside hair follicles and cause them to swell upwards into enlarged bumps called papules – hence why patients describe their feet appearing ‘swollen’! Excessively large papules can spread out across the surface area causing fluid-filled blisters similar to those seen following insect bites or contact dermatitis.[2][3] Tinea pedis (foot fungus

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