Hi & Welcome. Based on the history given you seem to have developed Lithium induced tremors. Tremor is a common problem for patients taking lithium seen early in the course of treatment. It often decreases with time on lithium. However, you are advised to consult your treating psychiatrist for other possible options include changing the dose or preparation of lithium, decreasing or eliminating other drugs, and using with beta-blocking drugs to reduce the frequency of tremors. You should also avoid drinking caffeinated beverages, like coffee and certain teas or sodas, can make your tremors worse. Hope this answers your query.