Feet that are sweaty all the time: what to know

Sweat is produced by glands to cool the body, but ongoing moisture on the soles can soften the outer skin, increase friction, and make footwear uncomfortable. It can also create conditions in which athlete's foot develops. Sweating limited mainly to the feet may be plantar hyperhidrosis; sweating that began suddenly, affects much of the body, occurs during sleep, or follows a medicine change needs a broader medical review. The amount of sweat and its timing help guide the assessment.

Wash and dry the feet carefully, especially between the toes. Wear moisture-wicking socks, change them when damp, and rotate breathable shoes so each pair can dry. Foot powder may reduce surface moisture if it does not irritate your skin. A clinician may discuss prescription antiperspirant or iontophoresis, a treatment that uses a mild electrical current through water to reduce sweating from the treated area. Do not use a prescription product on cracked skin unless advised.

Seek medical advice if sweating is new, worsening, interfering with work or sleep, or accompanied by weight change, palpitations, fever, dizziness, or night sweats. Arrange prompt foot care for persistent soggy skin, cracks, itching, scaling, pain, redness, swelling, or discharge. Sudden sweating with chest pain, faintness, or severe breathlessness needs emergency help.

Ask whether this fits excessive sweating, whether a medicine or health condition could contribute, and which option suits your skin. Ask how to prevent athlete's foot and how to protect any cracks.