Alcohol and depression in panic disorder.

Panic disorder (PD) is a common psychiatric illness, which has many complications such as major depression, increased suicide risk, agoraphobic avoidance behaviour, alcohol abuse and dependence. A number of studies have now documented increased rates of anxiety disorders among alcoholics and of alcoholism among patients presenting with anxiety disorders. In general, it appears that PD is more prevalent in alcoholics than would be expected on the basis of general population rates. Alcohol withdrawal is clearly associated with severe anxiety symptoms. It is suggested that repeated withdrawal episodes may trigger panic through a kindling process by causing subconvulsive stimuli with increasing amounts of electrical excitability or even spontaneous seizures. Serotonergic medications are effective in treating PD and depression. They also diminish interest in drinking in ethanol-dependent patients. Serotonergic agents can also affect conditioning and learning as well as behavioral control and self-administration. The treatment of panic patients with depressive and alcohol problems usually requires long-term treatment.