Sudden bumps on the face may be caused by acne, atopic dermatitis, eczema and other diseases. 1. Acne: commonly known as pimples, is a chronic inflammatory follicular sebaceous gland disease that occurs in adolescents, often on the face, neck, chest or back, etc., and is mainly manifested as pimples, pustules, skin nodules and cysts, which can cause sudden goosebumps on the face. 2. Allergic dermatitis: If the patient is allergic to cosmetics, the use of cosmetics can lead to local skin redness, swelling, itching, and wind, thus causing sudden bumps on the face. 3. Eczema: is caused by a variety of internal and external factors of a kind of skin inflammatory reaction, can lead to local skin papules, papules, blisters, etc., mostly symmetrical distribution, accompanied by intense itching and other discomforts, which can also cause sudden goose bumps on the face. There are many other causes of sudden facial pimples, which should be taken seriously, and it is recommended that patients seek timely medical attention to identify the cause of the disease and follow the doctor’s instructions for further treatment or therapy.