The cause of gray spots on the inner thighs may be due to factors such as ringworm, flat warts, and localized hyperpigmentation.
1. ringworm: the patient will because of direct or indirect contact with dermatophytes, such as red trichophyton, etc., the initial flaky erythema, with the development of the course of the disease can appear to appear gray spots, usually accompanied by a small amount of scales, and there can be obvious itching.
2. Tinea pedis: commonly known as sweat spot, is a superficial fungal disease caused by Malassezia furfur infection of the epidermal stratum corneum. At the beginning, it can be light brown, the surface is bright, and later there is hypopigmentation. As the old and new lesions are mixed together, it is in the form of blotchiness.
3. Localized pigmentation: for example, if the skin in the place has eczema, herpes zoster, urticaria and other related diseases before, it may be after the inflammatory process, thus stimulating the skin pigmentation and causing the symptoms of gray spots on the inner thighs of the patients.
Gray spots on the inner thighs need to cooperate with the doctor as soon as possible to clarify the cause, and then do targeted treatment.