Can stopping alcohol cause mania and trouble sleeping?

Seek help: Alcohol can cause trouble sleeping in the long run and also cause ups and downs in mood. Don't drink alcohol to sleep better and control mania, it worsens both in the long run. Please seek medical attention for you mania and sleep troubles. That's the best long term solution. Hope this answer helped.

Absolutely: Habituation to alcohol can lead to delirium tremens which is a manifestation of alcohol withdrawal.

See below: Cessation of alcohol use can result in a variety of negative emotional and medical consequences including, but not limited to, disruptions in sleep quantity/quality and mood disturbances. At its extreme, cessation of (chronically heavy) alcohol use can result in life-threatening confusion (eg delirium tremens = "dts") with loss of touch with reality/dangerous behavioral agitation ("psychosis").

A few questions: How much were you drinking & how quickly did you stop? Did you have mood and sleep problems that you tried to manage with alcohol and they are just resurfacing? Or are these new symptoms? Are you taking any meds? Do you have other medical conditions? Has your life situation changed b/c of your drinking? Perhaps you should start with a physical with your doc, including a nutrition assessment.