Red bumps on the skin the more you scratch the more itchy it is usually due to pathological factors, the causes of this symptom are urticaria, eczema, corn rashes and so on. 1. Urticaria: Urticaria is a kind of skin and mucous membrane allergic disease. Physical stimuli, such as sunlight exposure, friction, etc.; sensitizing foods, such as food additives, animal proteins, etc.; and medications, such as sulfonamides, penicillin, etc., are triggers that may trigger hives and itchy skin. 2. Eczema: Eczema is an allergic inflammatory reaction. There are many causes of eczema, such as mental stress, excessive fatigue, endocrine disorders, changes in the living environment, chemical stimulation and so on. Eczema may lead to skin pimples and itching. 3. Milia: Milia, commonly known as prickly heat, is a superficial, inflammatory skin disease. Inflammatory skin damage caused by blockage of the sweat ducts due to high temperature and humidity, and sweat retention and spillage, may lead to red bumps on the skin with itching sensation. 4. atopic dermatitis: a chronic, recurrent, inflammatory skin disease, the cause of which is still unclear, mainly manifested as erythema, papules, blisters, vesicles, dry skin, intense itching, but also red bumps the more you scratch the more itchy. Skin red bumps the more you scratch the more itchy condition, may also be other reasons, it is recommended to timely medical examination, according to the cause of the appropriate treatment.