Which of the following statements about myofascial pain dysfunction syndrome is incorrect?

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It predominantly affects young women.It results from muscle fatigue caused by persistent oral habits such as grinding and clenching.Management includes the use of an occlusal splint and maintaining a stress-free emotional state.The muscles around the mouth exhibit decreased tone.

Explanation

Myofascial pain dysfunction syndrome mainly affects young females and is caused by muscle fatigue due to chronic habits like grinding and clenching. Treatment typically involves occlusal guards and reducing emotional stress. However, the perioral muscles are usually hypertonic, not hypotonic, making option D incorrect.