Diabetes, lymphoma, atopic dermatitis, allergies and psoriasis can all cause feet to itch, says Healthline.com. While itchy feet can be indicative of a serious underlying health problem, they can also be caused by something as simple as an irritant.
Diabetes can cause peripheral neuropathy, a condition where the nerves in the legs and feet are damaged due to high blood sugar levels, explains Healthline.com. As a result, the legs and feet become itchy and numb. Patients with this condition can treat the itching by getting regular exercise and moisturizing their feet daily. Fungal infections can also cause the feet to itch such as athlete's foot. This can be treated with topical creams.
Sometimes the body produces too much serotonin, a neurotransmitter that constricts the blood vessels, leading to itchiness due to less blood circulation, states Healthline.com. This medical condition requires anti-serotonin medications such as paroxetine and pizotifen. There are several other skin conditions that can cause feet to itch such as allergies, dermatitis and psoriasis. Antihistamines and topical anti-itch creams can help to relieve symptoms. Sometimes itchiness is accompanied by redness, rashes, scale-like skin, blisters and discoloration. If any of these symptoms worsen, the patient needs to contact a doctor.