Shaking/Tremors DURING drinking

Patient: Just since past June I’ve been experiencing tremors after drinking alcohol only when I have more than one serving of alcohol within 5 hours or less of my first drink. I usually don’t drink much at all, maybe one or two drinks a week maybe and sometimes go weeks without any alcohol consumption. Got a mild concussion at the end of May, fainted on the way home and woke up in an ambulance. Have only had these symptoms after this accident but have no idea if it’s related. Just thought it was worth mentioning. So far am not drinking anymore but was wondering if anyone happened to know the cause?? Thanks

Symptoms: Shaking chills tremor