Reactions are liable to occur after the injection of any serum of animal origin. Anaphylaxis may occur in rare cases, with hypotension, dyspnoea, urticaria, and shock. Anaphylactic reactions should be treated with adrenalin, possibly in association with antihistamine and corticosteroid therapy. Serum sickness may occur 7 to 10 days after injection of serum of animal origin; symptoms include fever, vomiting, diarrhoea, bronchospasm, and urticaria; nephritis, myocarditis, neuritis, polyarthritis, and uveitis have been reported as rare complications of serum sickness.
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