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Benign fasciculation syndrome (BFS) is a neurological disorder characterized by fasciculation (twitching) of various voluntary muscles in the body. The twitching can occur in any voluntary muscle group but is most common in the eyelids, arms, legs, and feet. Even the tongue may be affected. The twitching may be occasional or may go on nearly continuously. Usually intentional movement of the involved muscle causes the fasciculations to cease immediately, but they may return once the muscle is at rest again. ==Signs and symptoms== The main symptom of benign fasciculation syndrome is focal or widespread involuntary muscle activity (twitching), which can occur at random or specific times (or places). Presenting symptoms of benign fasciculation syndrome may include:〔(【引用サイトリンク】title=AboutBFS.com - Featured Article )〕〔(【引用サイトリンク】title=Long-term follow-up of 121 patients with benign fasciculations )〕〔(【引用サイトリンク】title=BFS Recovery - What is Benign Fasciculation Syndrome? )〕 * Fasciculations (primary symptom) * Generalized fatigue * Muscle pain * Anxiety (Which can also be a cause) * Exercise intolerance * Globus sensation * Paraesthesias * Muscle cramping or Spasms Other symptoms include: * Hyperreflexia〔〔(【引用サイトリンク】title=Benign Fasciculation Syndrome (BFS) Constant Muscle Twitching )〕 * Muscle stiffness * Tremors * Itching * Myoclonic jerks BFS symptoms are typically present when the muscle is at rest and are not accompanied by severe muscle weakness. In some BFS cases, fasciculations can jump from one part of the body to another. For example, it could start in a leg muscle, then in a few seconds jump to the forehead, then the abdomen, etc. While only one part of the body is affected at a time, hardly a beat is missed as it jumps from one area to the next. Because fasciculations can occur on the head, this strongly suggests the brain as the generator due to its exclusive non-dependence on the spinal cord. (Together, the brain and spinal cord comprise the central nervous system.) Anxiety is often caused as a result of BFS and a lot of sufferers have hypochondria as BFS mimics symptoms of much more serious diseases such as Amyotrophic lateral sclerosis (ALS). 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Benign fasciculation syndrome」の詳細全文を読む スポンサード リンク
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