Tremors may be normal in some situations, especially if you have been through a stressful or anxiety inducing experience. They usually disappear once the situation improves. However, some tremors indicate an underlying neurological, nervous system or muscular problem that needs to be rectified.
If your doctor suspects that you are suffering from tremors, he/she will first conduct a physical exam, during which your affected area will be observed. You will be asked to perform some physical tasks such as writing, holding objects or putting together a puzzle to gauge the severity and extent of your tremor. Your doctor will also order further tests to diagnose the cause of the tremor such as blood and urine tests to check for underlying diseases that may cause it.
A neurological exam may also be conducted to check the functioning of your brain, muscles and nervous system. These tests will measure your reflexes, coordination, muscle strength etc.
Your doctor may also conduct a test known as an Electromyogram (EMG). This is a diagnostic procedure to assess the health of muscles and the nerve cells that control them (known as motor neurons). During this test, a thin disposable needle will be inserted into multiple muscles to record their electrical activity.