How long should I keep tax returns? In most cases, you should plan on keeping tax returns along with any supporting documents for a period of at least three years following the date you filed or the due date of your tax return, whichever is later.
Myoclonus. These are shock-like, jerking movements. They may occur naturally during sleep, or at moments when a person is startled. However, they can also be due to serious underlying health conditions, such as epilepsy or Alzheimerâs.
Rigidity, or resistance to movement, affects most patients and usually begins in the legs or neck. The affected muscles will remain tense and contracted, and some patients may feel pain as well as stiffness. Attempting to move the limb of a patient in Rigidity may lead to short, jerky movements called 'cog-wheeling'.