From the Guidelines
Foot odor is primarily caused by the combination of sweat and bacteria, particularly Brevibacteria and Propionibacteria, which thrive in the warm, moist environment of shoes and produce volatile compounds with distinctive smells. To manage foot odor, it is essential to practice good hygiene, including washing feet daily with antibacterial soap and drying them thoroughly, especially between the toes 1. Changing socks at least once daily and opting for moisture-wicking materials like cotton or wool can also help reduce sweat and bacteria growth. Applying antiperspirant containing aluminum chloride, such as Certain Dri or Drysol, to dry feet before bed or using antifungal powders like Zeasorb or sprays containing tolnaftate or miconazole can also be effective 1.
Some key points to consider in managing foot odor include:
- Rotating between at least two pairs of shoes and allowing 24 hours for them to dry completely between wears
- Using shoe deodorizers or antibacterial insoles to reduce bacteria growth
- Soaking feet in a solution of one part vinegar to two parts water for 15-20 minutes twice weekly for persistent odor
- Consulting a healthcare provider if the condition does not improve within two weeks or if skin changes, redness, or pain are noticed, as prescription-strength treatments may be necessary 1.
It is also important to note that certain medical conditions, such as diabetes, can increase the risk of foot complications, including foot odor, due to factors like peripheral neuropathy, altered biomechanics, and increased pressure on the feet 1. Regular foot examinations and proper foot care can help identify and manage these conditions, reducing the risk of complications.
From the Research
Causes of Foot Odor (Bromhidrosis)
- Foot odor, also known as bromhidrosis, can be caused by various factors, including fungal infections, poor foot hygiene, and certain medical conditions.
- Fungal infections, such as those caused by dermatophytes, can contribute to foot odor 2, 3, 4.
- The use of antifungal agents, such as terbinafine, has been shown to be effective in treating fungal infections, including those that cause foot odor 2, 3, 4, 5.
- Poor foot hygiene, including infrequent washing and drying of the feet, can also contribute to foot odor 6.
- Certain medical conditions, such as diabetes, can increase the risk of foot odor due to poor circulation and nerve damage 6.
- Other factors, such as wearing shoes that are too tight or made of synthetic materials, can also contribute to foot odor.
- It is worth noting that the provided studies do not directly address the causes of foot odor, but rather discuss the treatment and management of fungal infections and foot care practices.