Many red bumps on the inner thighs, accompanied by itching, are considered as follows: First, eczema, caused by allergic factors, mostly due to contact with chemical fiber lining pants, underwear, etc., and may be due to excessive consumption of spicy, irritating food, as well as eating beef, mutton, chicken, duck, goose, dog meat and other hair products caused by allergies, and may be caused by alcohol allergy due to heavy alcohol consumption. Second, folliculitis, which can appear as folliculitis papules and bumps, is mainly caused by a decrease in the body’s immune system, mostly in patients with severe diabetes or cerebral thrombosis, and caused by bacterial infections such as Propionibacterium acnes and Staphylococcus aureus.