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1 OMIM reference -
1 associated gene
13 signs/symptoms
COMMON GENES: 1
COMMON SIGNS: 12
1 OMIM reference -
1 associated gene
19 signs/symptoms
Acetazolamide-responsive myotonia
Myotonia fluctuans

SCN4A SCN4A


COMMON
GENES
SCN4A



Citations in the biomedical literature:


Acetazolamide-responsive myotonia
SCN4A
Myotonia fluctuans



Acetazolamide-responsive myotonia
Myotonia fluctuans

Synonym(s):
- ACZ-responsive congenital myotonia
- ACZ-responsive myotonia
- Acetazolamide-responsive congenital myotonia
- Myotonia - painful contractions
- Painful congenital myotonia
- Painful myotonia

Synonym(s):
- Exercise-induced delayed-onset myotonia
- Fluctuating myotonia

Classification (Orphanet):
- Rare genetic disease
- Rare neurologic disease
Classification (Orphanet):
- Rare genetic disease
- Rare neurologic disease

Classification (ICD10):
- Diseases of the nervous system -
Classification (ICD10):
- Diseases of the nervous system -

Epidemiological data:
Class of prevalence: 1-9 / 1 000 000
Average age onset: childhood
Average age of death: normal
Type of inheritance: autosomal dominant
Epidemiological data:
Class of prevalence: unknown
Average age onset: childhood
Average age of death: normal
Type of inheritance: autosomal dominant

External references:
1 OMIM reference -
No MeSH references
External references:
1 OMIM reference -
No MeSH references


COMMON
SIGNS
- Abnormal EMG / electromyogram / electropmyography
- Abnormal gait
- Abnormal muscle biopsy / muscle enzymes / CPK / LDH / aldolase / creatin phosphokinase
- Autosomal dominant inheritance
- Contractures / cramps / trismus / tetania / claudication / opisthotonos
- Feeding disorder / dysphagia / swallowing / sucking disorder / esophageal dyskinesia
- Hypertonia / spasticity / rigidity / stiffness
- Muscle hypertrophy
- Myalgia / muscular pain
- Myotonia
- Ophthalmoplegia / ophthalmoparesis / oculomotor palsy
- Thoracic / chest pain


Acetazolamide-responsive myotonia
Myotonia fluctuans

Occasional
- Hypothyroidy


Occasional
- Dystonia / torticollis / writer's cramp / blepharospasms
- Hyperkalemia
- Muscle weakness / flaccidity
- Muscular edema
- Myopathy
- Paresthesia / dysesthesia / hypoesthesia / anesthesia / numbness
- Respiratory distress / dyspnea / respiratory failure / lung volume reduction