Itchy feet at night and not itchy during the day may be caused by insect bites, athlete’s foot, eczema and other diseases. 1. Bug bite reaction: summer night is easy to be mosquito bites, especially the soles of the feet and other exposed parts. If the mosquito bites at night, can cause local itching, usually in the daytime symptoms can be relieved. 2. Tinea pedis: Tinea pedis is a disease caused by fungal infection, often occurring on the soles of the feet, the skin between the toes. Symptoms manifest blisters, keratinization, flaking, itching and so on. The vagus nerve is excited at night and is more sensitive to the itching sensation, so there will be feet itching at night and not itching during the day. 3. Eczema: Eczema is a chronic inflammatory itchy skin disease, the cause of which is related to heredity, immune abnormalities, hormonal changes, etc., and the triggers include diet, chemicals, and mental factors. Generally at night itching symptoms are more obvious, and bathing caused by dry skin and so on. There are more reasons why feet itch at night but not during the day, so it is recommended to consult a doctor for a clear diagnosis.