Hi, Here are some potential causes and treatments for recurring brown spots on the foot: * Hyperpigmentation: Brown spots on the foot can be caused by hyperpigmentation, which is an overproduction of melanin. Treatment options for hyperpigmentation may include: - Topical creams: Prescription creams containing hydroquinone, retinoids, corticosteroids, or other lightening agents may be recommended to reduce the appearance of brown spots. - Chemical peels: A chemical solution is applied to the skin to exfoliate it and lighten the affected areas of the skin. - Laser therapy: Certain laser treatments can target and reduce pigmentation irregularities on the skin. * Fungal Infection: Fungal infections, such as tinea versicolor, can cause brown spots on the foot. Treatment options may include: - Antifungal creams or ointments: Over-the-counter or prescription antifungal medications can be used topically to treat fungal infections. - Oral antifungal medications: In more severe cases or if the infection is widespread, oral antifungal medications may be prescribed. * Lentigines: Lentigines are flat, brown spots caused by sun exposure. Treatment options may include: - Sunscreen: Regularly applying sunscreen with a high SPF to the feet can help prevent further darkening of the spots. - Topical creams: Prescription creams containing hydroquinone or retinoids may be recommended to lighten the spots. - Cryotherapy: Freezing the spots with liquid nitrogen can help lighten or remove lentigines. * Other Causes: Other potential causes of brown spots on the foot, such as moles or birthmarks, may require specific treatments or monitoring by a healthcare professional. Consult a dermatologist for accurate diagnosis and treatment. Take care. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Muhammad Umer Farooq, General & Family Physician