A lot of small bumps grow on the skin after scratching may be due to urticaria, allergic contact dermatitis or eczema and other reasons.
1. urticaria: mostly due to infection, skin contact and other reasons, the patient’s skin, mucous membrane parts of small blood vessels will appear dilated and localized edema reaction, often accompanied by skin itching, the emergence of wind, bright red, pale white or skin color, there will be a lot of bumps on the skin after scratching the situation.
2. Allergic contact dermatitis: if the patient contact with milk, fish and shrimp food allergens, may lead to itching, swelling and other symptoms of the skin, after scratching the skin may also grow a lot of small bumps, erythema.
3. Eczema: the cause of the disease is still unclear, may be related to infection, allergies, immune function decline and other reasons, patients usually appear red spots, pimples and other symptoms, after scratching the skin may grow a lot of small bumps.
Patients who have a lot of small bumps on the skin after scratching are advised to seek timely medical examination and treatment under the guidance of a doctor to avoid adverse reactions.