Well, delirium tremens is a condition which happens when alcohol is suddenly stopped. During these episodes a person can have sudden and severe mental changes as well as neurological changes. For example, a person can develop seizures during delirium tremens. Falls with head injury are common, suicidal thoughts are common. Not everyone who stops alcohol intake will develop these but because there is no way to predict and because your alcohol consumption has been quite high, it is safe to go through withdrawal with supervision.
Here is a link that will give you more explanation about delirium tremens:
I understand that you haven't told anyone about your alcohol consumption but I think that you might need your family's and your doctor's support to safely stop alcohol and stay away from it. It is one of the most difficult things to tell someone but, in the long run, you will only benefit from it.
Please let me know if you have any other questions. I will be happy to assist you further.
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