Hello, Several conditions can cause tremors such as many medication side effects, alcoholism, Parkinson's disease, multiple sclerosis, stroke or focal seizures, low or high thyroid, tumors of the brain, Friedrich's ataxia or Wilson's disease. One type of tremors have no known cause and they are called essential tremors.
If your condition is worsening you probably need to see your doctor to determine the cause and why it is getting worse.