Caffeine challenge test and panic disorder: a systematic literature review

Area of Science:

• Psychiatry
• Pharmacology
• Clinical Psychology

Background:

• Panic disorder is a debilitating anxiety condition.
• Caffeine is a widely consumed stimulant with known psychoactive effects.
• The anxiogenic potential of caffeine in panic disorder requires thorough investigation.

Purpose of the Study:

• To systematically review studies examining caffeine's role in inducing panic attacks.
• To evaluate the anxiogenic effects of the caffeine challenge test in panic disorder patients.

Main Methods:

• Systematic literature search of PubMed, Biblioteca Virtual em Saúde, and ISI Web of Knowledge.
• Inclusion of eight randomized, double-blind, oral caffeine administration studies.
• Analysis of studies investigating panic attacks and/or anxiogenic effects.

Main Results:

• All eight reviewed studies indicated a positive association between caffeine and anxiogenic effects.
• A significant link was observed between caffeine intake and the induction of panic attacks in susceptible individuals.
• High percentages of participant loss during follow-up were noted across the studies (14.3%–73.1%).

Conclusions:

• Caffeine acts as a trigger for panic attacks and anxiety in patients diagnosed with panic disorder.
• The caffeine challenge test is a relevant tool for understanding caffeine's anxiogenic properties in this population.
• Further research should address confounding factors and improve participant retention in such studies.