The common causes of itchy rotten toes include tinea pedis, eczema, other factors and so on. 1. Tinea pedis: fungal infection of the foot skin can cause tinea pedis, which occurs on the soles of the feet, toes and other parts of the foot, with clinical manifestations such as foot peeling, blisters, itching, cracking of the skin and pain. 2. Eczema: eczema patients can appear red spots, papules, oozing, crusting, vesicles, peeling, accompanied by intense itching, skin thickening and other clinical manifestations, occurring in the toes can also appear toe cracks. 3. Other factors: too much exercise, sweaty feet, breathable shoes and socks, humid living or working environment may also cause rotten toes, itchy toes and other symptoms. There may also be other reasons, it is recommended that the patient go to the hospital in time, after clarifying the cause of the disease and active treatment.