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.
Achalasia: Normally, a personâs esophagus performs a series of contractions, called peristalsis, to move food from the throat to the stomach. Achalasia is a rare disorder in which the lower esophageal sphincter (LES), a ringed muscle that acts as a valve between the esophagus and stomach, does not relax.chalasia: Normally, a personâs esophagus performs a series of contractions, called peristalsis, to move food from the throat to the stomach. Achalasia is a rare disorder in which the lower esophageal sphincter (LES), a ringed muscle that acts as a valve between the esophagus and stomach, does not relax.