As an example, anaphylactic shock can occur in an individual who, for instance, has had a hay fever injection, the dosage of which is near, or slightly exceeds, his level of tolerance.

• 举例说，过敏性休克能发生在这样的病人身上，患者如接受了枯草热提取液，其剂量接近或稍超过他的耐受标准的话，他可能发生过敏性休克。