Myotonia Fluctuans

Description

Myotonia fluctuans (MF) is a form of potassium-aggravated myotonia (PAM, see this term) which is cold insensitive, dramatically fluctuating and profoundly worsened by potassium ingestion.

Clinical Features

Top most frequent phenotypes and symptoms related to Myotonia Fluctuans

  • Muscle weakness
  • Spasticity
  • Gait disturbance
  • Dysphagia
  • Myopathy
  • Hypertonia
  • Elevated serum creatine phosphokinase
  • Dyspnea
  • Myalgia
  • Muscle cramps

And another 9 symptoms. If you need more information about this disease we can help you.

Click here to know more about Mendelian.

Incidence and onset information

— Currently we don't have prevalence information about this disease (Not enough data available about incidence and published cases.)
No data available about the known clinical features onset.

Alternative names

Myotonia Fluctuans Is also known as fluctuating myotonia, exercise-induced delayed-onset myotonia.

Researches and researchers

Currently, we don't have any information about doctors, researches or researchers related to this disease. Please contact us if you would like to appear here.

Myotonia Fluctuans Recommended genes panels

Panel Name, Specifity and genes Tested/covered
SCN4A (Myotonia) DNA Sequencing Test.

By Athena Diagnostics Inc (United States).

SCN4A
Specificity
100 %
Genes
100 %
Early Onset Myotonia Evaluation.

By Athena Diagnostics Inc (United States).

SCN4A, CLCN1, DMPK
Specificity
34 %
Genes
100 %
Myotonic Syndrome Advanced Evaluation.

By Athena Diagnostics Inc (United States).

SCN4A, CNBP, CAV3, CLCN1, DMPK, HSPG2, ATP2A1
Specificity
15 %
Genes
100 %
Periodic Paralysis Advanced Sequencing Evaluation.

By Athena Diagnostics Inc (United States).

SCN4A, CACNA1S, KCNJ2
Specificity
34 %
Genes
100 %
Congenital Myasthenic Syndrome Advanced Sequencing Evaluation.

By Athena Diagnostics Inc (United States).

SCN4A, CHAT, CHRNA1, CHRNB1, CHRND, CHRNE, COLQ, DOK7, DPAGT1, AGRN, GFPT1, MUSK, RAPSN
Specificity
8 %
Genes
100 %
Neuromuscular Disorders Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

RYR1, BIN1, SCN4A, SGCA, SGCB, SGCD, SGCE, SGCG, SLC25A4, SUCLA2, SUCLG1, TWNK, TCAP, TIA1, TK2, TNNI2, TNNT1, TPM2, TPM3, MYOT , (...)

View the complete list with 124 more genes
Specificity
1 %
Genes
100 %
NGS Rhabdomyolysis and Metabolic Myopathies Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

RYR1, SCN4A, SLC16A1, SUCLA2, TWNK, TK2, TSFM, LPIN1, SLC25A20, CASQ1, CAV3, RRM2B, FKRP, CPT2, SIL1, CTDP1, ANO5, TSEN54, DGUOK, DMD , (...)

View the complete list with 27 more genes
Specificity
3 %
Genes
100 %
NGS Rhabdomyolysis and Metabolic Myopathies Panel.

By Greenwood Genetic Center Diagnostic Laboratories Greenwood Genetic Center (United States).

RYR1, SCN4A, SLC16A1, SUCLA2, TWNK, TK2, TSFM, LPIN1, SLC25A20, CASQ1, CAV3, RRM2B, FKRP, CPT2, SIL1, CTDP1, ANO5, TSEN54, DGUOK, DMD , (...)

View the complete list with 27 more genes
Specificity
3 %
Genes
100 %

You can get up to 120 more panels with our dedicated tool

Learn more

Sources and references

You can check the following sources for additional information.

ORPHANET Rare Disease Search Engine

If you liked this article maybe you will also find interesting the following in-depth articles about other rare diseases, like NEVUS, EPIDERMAL TETRALOGY OF FALLOT; TOF SHORT RIB-POLYDACTYLY SYNDROME, VERMA-NAUMOFF TYPE MICROCEPHALY-MICROMELIA SYNDROME; MIMIS OSTEOPOROSIS, JUVENILE HEMOCHROMATOSIS, TYPE 3; HFE3 WAISMAN SYNDROME; WSMN