Why does pitted keratolysis cause body odour?

Pitted keratolysis commonly affects the pressure areas of the feet. Tiny surface depressions can develop as bacteria digest parts of the outer keratin layer. Sweat, warmth, and enclosed footwear keep the area damp, allowing bacterial activity to continue. The odour comes from substances produced during this breakdown, rather than from sweat alone.

You may also notice shallow pits, softened white skin, or increased smell after removing shoes. Itching is not always present. Similar odour can occur with other foot problems, so the appearance and distribution help a clinician distinguish them.

Wash the feet gently, dry carefully between the toes, and change damp socks promptly. Breathable shoes and rotating pairs give footwear time to dry; clean or air shoes that retain sweat. A clinician may recommend a topical antibacterial treatment and advise how long to use it. Avoid scraping the pits or applying harsh household chemicals, which can damage already softened skin.

Arrange a medical assessment if odour persists despite careful drying, pits spread, the skin becomes painful, or you develop redness, swelling, drainage, fever, or difficulty walking. Prompt advice is especially sensible for diabetes, reduced sensation, or poor circulation because foot skin problems may need closer monitoring.

Ask whether the pits and odour fit pitted keratolysis, which treatment is appropriate for your skin, and how to prevent recurrence when feet sweat heavily. Mention new footwear, work conditions, sports, or symptoms such as pain and drainage.