Goose bumps after the third booster shot may be caused by the body’s allergy to certain ingredients in the vaccine, but it may also be caused by other diseases such as hives and contact dermatitis, which need to be selected according to the specific circumstances of the appropriate drug treatment. 1. Vaccine allergy: goose bumps after the third booster shot is mostly an allergic reaction to the components of the vaccine, if the allergy symptoms are not serious, you can observe, the discomfort will generally subside on its own. But in the case of severe allergic symptoms need to be under the guidance of the doctor to take loratadine tablets, cetirizine tablets and other anti-allergy drugs for treatment. 2. Urticaria: Urticaria can be manifested as bumps on the body and can be accompanied by itchy skin. Patients should stay away from allergens and take anti-allergy drugs such as loratadine tablets, which can be used together with glycerite lotion to help stop itching. 3. Contact dermatitis: contact dermatitis is mainly caused by skin contact with allergic substances, such as certain drugs, certain metals, clothing allergies, etc., can lead to bumps on the body. Patients should first clarify the causative factors and to avoid, and then can be used under the guidance of the doctor mometasone furoate ointment and other drugs, while with the cetirizine and other antihistamines treatment. It is recommended that after the third booster injection, you should go to the hospital in time to find out the specific cause and treatment, so as not to delay the condition. The use of drugs should follow the doctor’s instructions, so as not to cause serious consequences.