Difficulty Opening Mouth
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Reviewed By:

Yoshinori Abe

Yoshinori Abe, MD (Internal medicine)

Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.

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Content updated on Jan 4, 2023

About the symptom

It refers to the restriction of the range of motion of the jaws and difficulty in opening the mouth fully.

When to see a doctor

Seek professional care if you experience any of the following symptoms

  • Visual field defect

  • Impossible to walk normally

  • Difficulty breathing / breathlessness

  • Abnormal sensation (tingling, prickling)

  • Muscle weakness in the limbs

  • Unilateral blindness

  • Recent weight loss

  • Disorder of consciousness

  • Numbness of the body

  • Altered mental status (delirium)

  • Headache

  • Seizure attack

  • Head injury

  • Fever

Possible causes

  • Acute tonsillitis / pharyngitis

    Infection of the tonsils and pharynx (back of the mouth), either by viruses or bacteria.

  • Parkinson disease (PD)

    A progressive nervous system disorder affecting movement. It occurs due to nerve cell damage in the brain. The exact cause for PD is unknown. Risk factors include genetics, male gender, old age, and exposure to certain toxins and environmental factors.

  • Spinal cord tumor

    A spinal tumor develops within the spinal canal or spine bones. It can be life-threatening and cause permanent disability. Causes include environmental toxins and inherited syndromes like neurofibromatosis 2 and von Hippel-Lindau disease.

  • Otitis media
  • Muscular dystrophy
  • Wilson disease

Related serious diseases

  • Bronchial asthma

    A condition where the airways are highly sensitive and overreact to foreign substances or environmental changes. The underlying cause is unclear but involves genetics. Many triggers for asthma flares include smoke, pollen, dust mite droppings, cold weather, exercise, and viral infections.

  • Cerebral infarction
  • Cerebral hemorrhage
  • Tetanus

Questions your doctor may ask about this symptom

Your doctor may ask these questions to check for this symptom

  • Do you have difficulty opening your mouth?

  • Do you have any swelling of the jaw?

  • Do you have jaw pain?

  • Are you breathless or having hard time breathing?

  • Do you feel that you cannot speak as well as before?

Other Related Symptoms

Similar symptoms or complaints

Symptoms treated by the same specialty

Reviewed By:

Yoshinori Abe

Yoshinori Abe, MD (Internal medicine)

Dr. Abe graduated from The University of Tokyo School of Medicine in 2015. He completed his residency at the Tokyo Metropolitan Health and Longevity Medical Center. He co-founded Ubie, Inc. in May 2017, where he currently serves as CEO & product owner at Ubie. Since December 2019, he has been a member of the Special Committee for Activation of Research in Emergency AI of the Japanese Association for Acute Medicine. | | Dr. Abe has been elected in the 2020 Forbes 30 Under 30 Asia Healthcare & Science category.

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