Why does my hand itch, develop small bumps, and become increasingly itchy the more I scratch?

May 19, 2022 Source: Cainiu Health
Disease description:

This morning, I developed numerous small bumps on my hands, accompanied by intense itching. Why does scratching the itchy bumps on my hands make the itching worse?

Doctor's answer (1)
Dr. Liu Wan
Itching of the hands accompanied by small bumps that worsen with scratching may be caused by tinea manuum (a fungal infection of the hands), but could also result from eczema. Additionally, conditions such as allergic urticaria may present with similar symptoms—itching and small bumps on the hands that intensify upon scratching. When symptoms occur, it is recommended to visit a reputable Grade A-3 hospital and consult a professional dermatologist for appropriate diagnosis and treatment.