Definition

What is Hereditary geniospasm?

Hereditary geniospasm is a rare, benign hereditary movement disorder of the mentalis muscle characterized by involuntary, episodic up and down movements (tremors) of the lower lip and chin.

How common is Hereditary geniospasm?

Hereditary geniospasm is not common. Please discuss with your doctor for further information.

Symptoms

What are the symptoms of Hereditary geniospasm?

Hereditary geniospasm is characterized by involuntary tremors of the chin and lower lip. The tremors can be present for a few seconds to a few hours. Hereditary geniospasm can also involve buccal floor muscles and tongue, but to a lesser degree. Episodes of Hereditary geniospasm usually first appear in infancy or childhood and tend to lessen in frequency with age.

There may be some symptoms not listed above. If you have any concerns about a symptom, please consult your doctor.

When should I see my doctor?

If you have any signs or symptoms listed above or have any questions, please consult with your doctor. Everyone’s body acts differently. It is always best to discuss with your doctor what is best for your situation.

Causes

What causes Hereditary geniospasm?

The exact gene which causes Hereditary geniospasm is not known. It is thought that mutations or changes in a gene on chromosome 9 can lead to development of the condition in some families.

Risk factors

What increases my risk for Hereditary geniospasm?

Hereditary geniospasm is inherited in an autosomal dominant manner. This means that having only one mutated copy of the causative gene in each body cell is sufficient to cause signs and symptoms of the condition. When an individual with an autosomal dominant condition has children, each child has a 50% (1 in 2) chance to inherit the mutated copy of the gene and also be affected. Because there is a 50% chance for each child, it is possible for all of the children of an affected individual to be affected, or likewise, for all of the children to be unaffected.

Diagnosis & treatment

The information provided is not a substitute for any medical advice. ALWAYS consult with your doctor for more information.

How is Hereditary geniospasm diagnosed?

There are no specific laboratories which offer genetic testing for diagnosis of Hereditary geniospasm. Hereditary geniospasm can be diagnosed by clinical evaluation of the patient by a health care professional, such as a neurologist who is a specialist in movement disorders.

How is Hereditary geniospasm treated?

Hereditary geniospasm, which may also be referred to as hereditary essential chin myoclonus, is generally considered a benign disorder although in some cases it can cause anxiety and social embarrassment. Significant improvement with age has been reported. Several drugs are used to treat myoclonus, such as benzodiazepines and anticonvulsants. However, individuals may not respond to a single medication and may experience significant side effects if a combination of drugs is used. It has also been suggested that botulinum toxin be considered as a primary treatment because it has been shown to be effective and well tolerated.

Lifestyle changes & home remedies

What are some lifestyle changes or home remedies that can help me manage Hereditary geniospasm?

If you have any questions, please consult with your doctor to better understand the best solution for you.

Hello Health Group does not provide medical advice, diagnosis or treatment.

Sources

Review Date: February 9, 2018 | Last Modified: February 9, 2018

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