Difficulty with fine motor skills in one hand can arise from several manageable conditions, such as a pinched nerve, essential tremor, or mild neurological changes. Because the right treatment depends entirely on the exact cause, it is important to see a healthcare provider or neurologist for a proper evaluation. Depending on their diagnosis, treatments can range from physical therapy to improve strength and coordination, to generic medications like propranolol for tremors or gabapentin for nerve issues. Please try not to worry; many of these issues are highly treatable. A clinical exam is the best first step to help you regain smooth movement.