Hard skin like blisters (medically known as blisters) on the fingers may be due to excessive friction, sweating herpes, fungal infections, etc. Temporary observation, antihistamines, antifungal treatment can be given. 1. Excessive friction: some patients will be due to long-term mechanical friction in the finger area, thus causing excessive proliferation of the cuticle and blister-like crust. Can play a certain protective role, generally do not need special treatment, reduce friction can be relieved. 2. Sweat herpes: This is a blistering disease that occurs symmetrically on the hands and feet, and may be related to allergic factors, need to remove the triggering factors, and most of them will subside on their own. If accompanied by obvious itching, you can choose to use topical glycerine lotion, oral loratadine, cetirizine and other antihistamines treatment. 3. Fungal infection: When there is a fungal infection in the finger area, it may be due to ringworm, which causes localized blister-like crust. After diagnosis, you can choose ketoconazole, econazole, clotrimazole and other antifungal drug treatment. There may also be other causes for the blister-like crust on the fingers, so you should cooperate with your doctor for further examination and treatment. All of the above drugs should be used in accordance with medical advice.