Red bumps with itching on the body after eating seafood may be urticaria caused by a type I hypersensitivity reaction. It is usually necessary to refuse to continue to eat seafood, and follow the doctor’s instructions for treatment with medication. Urticaria caused by seafood is IgE-mediated. Generally acute urticaria, self-conscious skin itching, itchy parts of the appearance of the size of the red red wind,. First of all, you should stop eating seafood in time to prevent further aggravation of allergy. Drug treatment is generally preferred to the second generation of H1 receptor antagonists such as cetirizine, which has a mild sedative effect. Vitamin C and calcium can reduce vascular permeability and have a synergistic effect with antihistamines such as promethazine. In addition to this, the presence of concomitant shock, laryngeal edema dyspnea, should be immediately resuscitated, mainly subcutaneous injection of epinephrine, glucocorticosteroids such as trimethoprim intravenously. The appearance of bronchospasm should be intravenous aminophylline, laryngeal edema obstruction can be tracheotomy. Red bumps appear on the body after eating seafood, you need to seek medical attention as soon as possible, follow the doctor’s instructions for treatment, do not self-medication, so as not to aggravate the condition.