Mobius syndrome

Mobius syndrome is a rare neurological disorder that primarily affects the muscles that control facial expression and eye movement. The signs and symptoms of this condition are present from birth.

Causes

Mobius syndrome is caused by the absence or underdevelopment of the 6th and 7th cranial nerves, which are responsible for carrying brain signals to the muscles that control eye movement and facial expression. The exact cause of this disorder is unknown, but it is believed to be due to a vascular disruption phenomenon that occurs during fetal development.

Symptoms

The most common symptoms of Mobius syndrome are the inability to smile, frown, suck, or blink. Other symptoms may include feeding difficulties, speech difficulties, eye abnormalities, and limb abnormalities. Some individuals with Mobius syndrome may also have intellectual disability or hearing loss.

Diagnosis

The diagnosis of Mobius syndrome is based on a thorough clinical evaluation, a detailed patient history, and specialized tests to assess the facial nerve function. There is no specific genetic test to confirm the diagnosis as the genetic cause of the disorder is still unknown.

Treatment

There is no cure for Mobius syndrome. Treatment is symptomatic and supportive, and may include physical therapy, speech therapy, nutritional support, and in some cases, surgery to correct crossed eyes or improve facial appearance.

Prognosis

The prognosis for individuals with Mobius syndrome varies. While the disorder can cause significant physical and emotional challenges, with appropriate support and treatment, many individuals with Mobius syndrome lead healthy, productive lives.

See also

• Facial paralysis
• Congenital disorders
• Neurological disorders

NIH genetic and rare disease info

• NIH info on Mobius syndrome

Mobius syndrome is a rare disease.

Template:Congenital disorders

Mobius syndrome Resources
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