Itchy and small bumps on the inner side of the thighs may be eczema or ringworm, you should go to the regular hospital to do fungal testing, that is, take some dander from the lesion and put it under the microscope to see if there is fungus. If the fungus is found, it can be diagnosed as ringworm, which is a fungal infectious disease, and antifungal treatment can be given, such as topical clotrimazole cream or terbinafine hydrochloride cream. If the fungal test is negative, the possibility of eczema is considered to be higher, you can use some hormonal creams, such as Dinaid cream or hydrocortisone butyrate cream, so you should go to the regular hospital after suffering from this disease, under the guidance of the clinician for treatment.