Darkening of the inner thighs in women may be caused by simple pigmentation, such as pigmentation caused by long-term walking friction and friction of inappropriate pants in obese people. It is recommended that such people lose weight properly, correct their walking posture, wear loose, fat pants to reduce local sweating and friction, and consider taking vitamin C orally to try to remove the pigmentation on the inner thighs. Secondly, the darkening of a woman’s inner thighs may also be caused by disease factors that require prompt medical treatment. The common diseases are ringworm, acanthosis nigricans, etc. 1, ringworm: lesions often appear in the groin and buttocks, patients may have transient skin pigmentation after ringworm shedding, accompanied by local skin thickening or itching, you need to follow medical advice to use imidazole or acrylamide ointment on the affected area to relieve the symptoms; 2, acanthosis nigricans: initially visible lesions manifested as dirty yellow, gray or brownish yellow, followed by melanin deepening, with The treatment includes taking vitamin A, topical application of vitamin A acid gel, coal tar sulfate ointment, etc. For other diseases that cause women’s inner thighs to be dark, patients need to be identified and treated as soon as possible to avoid delays. For while receiving treatment, patients should pay attention to diet, avoid eating foods that can easily trigger allergies, wear comfortable and breathable clothes, keep the local dry and clean.