The common causes of itchy toes are tinea pedis, eczema, palmoplantar pustulosis, insect bite dermatitis, frostbite and so on.
1. Tinea pedis: fungal infection, mainly manifested in groups or scattered distribution of small blisters, blisters dry and absorb flaking, often accompanied by strong itching, which, between the rubbing erosion type tinea pedis mainly manifested in between the toes erosion, impregnation oozing, with obvious itching.
2. Eczema: caused by cold, heat, sweating, friction scratching, eczema is often symmetrical distribution, there is obvious itching, manifested as a dense small papules or herpes, the base of the red, scratching rupture can be exudate vesicles, lesions boundary is not clear.
3. Palmoplantar pustulosis: a chronic recurrent disease, common in the toes, forefoot, in the erythema on the basis of the occurrence of deep in the small pustules, often flaking, yellow, yellow-brown or black-brown, pustules drying flaking left behind the tender thin epidermis, lesions can be severe vesiculitis, oozing, itching, burning sensation.
4. Insect bite dermatitis: mites, mosquitoes, fleas and other insect bites can also cause itching on the back of the feet, the corresponding lesions can be seen in the insect bites, self-conscious itching is severe, such as mosquito bites, the skin will appear erythematous spots, pimples, or wind, feeling itchy or mildly swollen and painful, the rash can subside on its own within 2 to 3 days.
5. Frostbite: mostly occurs in the cold season when the feet are not well warmed, manifested as itchy feet, foot erythema, foot swelling, etc., itching will be more pronounced when heated, severe blisters, blisters rupture ulcers, vesicles, with a painful sensation.
It is recommended to consult a dermatologist to determine the cause of the disease.