What is an inappropriate use of antihistamines?

Antihistamines are primarily used to block the action of histamine, a substance in the body that causes allergic symptoms. While they can be effective for treating allergic rhinitis, managing symptoms of vertigo, and sometimes even addressing symptoms of the common cold (such as runny nose), their application in treating anxiety disorders is inappropriate.

The reason treating anxiety disorders with antihistamines is not recommended stems from their pharmacological effects. Although some antihistamines may cause sedation and could provide temporary relief from anxiety symptoms, they do not address the underlying causes of anxiety. In fact, reliance on antihistamines for anxiety can lead to unwanted side effects and potentially exacerbate anxiety in the long term, as they do not have the therapeutic efficacy that is typically required for effective anxiety management. Proper treatment for anxiety disorders usually involves psychotherapy, counseling, or medications specifically designed to target anxiety, such as selective serotonin reuptake inhibitors (SSRIs) or benzodiazepines, under the guidance of a healthcare professional.