Itchy fingers and toes may be related to tinea pedis, insect bite dermatitis, sweat herpes and other causes. 1. Ringworm: Fingers and toes are infected by fungi, which can cause localized pimples and blisters, which may be accompanied by itching. 2. Insect bite dermatitis: when mosquitoes bite the skin of the fingers and toes, they will inject venom into the body, which can cause the body to have an abnormal immune response and itchy symptoms. 3. Sweat herpes: mostly under the influence of fungal infection, hyperhidrosis and other factors, can lead to fingers and toes and other parts of the herpes, mostly symmetrical distribution, itching, pain and other symptoms. There may be other causes of itchy fingers and toes, it is recommended that patients go to the hospital in a timely manner to clarify the cause of the disease and standardize the treatment under the guidance of the doctor.