Why do my feet itch after soaking them in hot water for a long time?

Generally, itchy feet after prolonged foot soaking may be related to dry skin on the feet, excessively hot water, fungal infection, contact dermatitis, or localized skin allergy. It is recommended that patients promptly visit a hospital and follow medical advice for treatment. Specific causes are analyzed as follows:

1. Dry skin on the feet: During foot soaking, the skin on the feet may remain immersed in water for extended periods, leading to loss of the natural oily protective layer, resulting in dryness and itchiness. This may be accompanied by rough, flaky skin. It is advisable to exfoliate and moisturize the feet before soaking, and apply a hydrating cream immediately afterward.

2. Water temperature too high: Excessively hot water can irritate the skin and, over time, cause capillary dilation, leading to itching. This may be accompanied by redness and mild stinging sensations on the feet. It is recommended to keep the water temperature within a comfortable range and avoid soaking for too long.

3. Fungal infection: The warm, moist environment during foot soaking may promote fungal growth, potentially leading to a fungal infection. Symptoms may include skin rashes (papules) and itching. Patients should promptly follow medical guidance to use antifungal medications such as naftifine-ketoconazole cream, terbinafine hydrochloride cream, or luliconazole cream.

4. Contact dermatitis: Exposure to harsh cleaning products or chemical substances in foot soaks or herbal packets may trigger contact dermatitis, causing symptoms such as redness, itching, stinging, or burning sensations on the feet. It is recommended to immediately discontinue contact with the irritant and, under a doctor’s supervision, use calamine lotion, mupirocin ointment, or compound dexamethasone cream to relieve symptoms.

5. Localized skin allergy: Certain ingredients in foot soak products or water additives may cause allergic reactions on the feet, manifesting as red papules and itching. It is advisable to avoid the allergen and, under medical guidance, take antihistamines such as loratadine tablets, cetirizine hydrochloride tablets, or chlorpheniramine maleate tablets to aid recovery.

In daily life, maintaining a balanced diet and consuming adequate vitamins and protein—such as from broccoli and eggs—can help strengthen the immune system and promote overall health.