Itchy red dots on the legs need to be carefully observed for appearance. If the dots are scattered and have mild keratinization, consider that it may be an allergic dermatitis formed by purely allergic factors, which can be treated with topical fluticasone propionate cream or tretinoin cream for application, which has a certain improvement effect. If the itching is intense, you can also take oral cetirizine tablets to relieve the itching symptoms. If the red dots on the legs are densely arranged, with obvious hyperplasia and decreased tactile sensation when touched by hand, with itching as the main cause, consider the possibility of skin amyloidosis, which is caused by long-term friction and irritation factors. It is recommended to choose to use salicylic acid cream or compound lactic acid cream for application, which can soften the keratin, and then with the use of dampness and anti-itch ointment for comprehensive treatment.