Why do hands and feet become increasingly itchy when scratched?
Disease description:
My hands and feet have been very itchy these days, especially when scratching, and the itching is particularly noticeable when soaked in hot water. I would like to know what causes the itching on the hands and feet to become worse with scratching.
Doctor's answer (1)
Dr. Wang Xiaoyan
The causes of worsening itchiness in hands and feet when scratched are diverse, mainly including:
1. Dry skin: Excessively dry skin may lead to itchiness in hands and feet, which worsens with scratching. Dry skin easily loses moisture, weakening the skin barrier function and thereby causing itching.
2. Allergic reactions: Allergies to substances such as detergents, cosmetics, and certain metals may also result in itchiness in the hands and feet that intensifies with scratching. Such allergic reactions are typically accompanied by redness, swelling, and rash.
3. Fungal infection: Fungal infections affecting the hands and feet, such as tinea manuum/pedis (hand/foot fungus), can also cause worsening itchiness upon scratching. These infections typically present with symptoms such as skin flaking, blisters, and cracks.
4. Dermatological conditions: Skin disorders such as urticaria (hives), eczema, and neurodermatitis may also cause itchiness in the hands and feet that worsens with scratching. These conditions are often associated with immune factors, allergies, or nerve dysfunction.
5. Other systemic diseases: Certain systemic diseases, such as diabetic dermopathy, can also lead to worsening itchiness in the hands and feet when scratched. This is usually associated with poor blood sugar control.
