Itchy thigh roots with bumps can be several things. 1. ringworm: ringworm is a fungal infection that is accompanied by itching, local dampness, erythema, papules, scales, and patches with clear borders. ringworm is treated mainly with topical antifungal medications such as dacrynic acid, sertaconazole, etc. 2. allergic diseases: eczema, for example, eczema treatment is contrary to ringworm, so it is recommended to first improve the fungal examination and To exclude ringworm, you can apply compound camphor cream as well as hydrocortisone butyrate cream. hydrocortisone butyrate is a hormonal cream, which should be controlled in amount and time, and it is recommended to apply it under the guidance of a doctor. 3. immune-related diseases such as familial benign chronic aspergillosis cannot be excluded, and this disease is recommended to first clarify the diagnosis and then develop a corresponding treatment plan.