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Descriptor in English: Isaacs Syndrome
Descriptor in Spanish: Síndrome de Isaacs
Descriptor in Portuguese: Síndrome de Isaacs
Descriptor in French: Syndrome d'Isaacs-Mertens
Entry term(s): Acquired Neuromyotonia
Continuous Muscle Activity Syndrome
Continuous Myokymia
Continuous Myokymias
Gamstorp Wohlfart Syndrome
Gamstorp-Wohlfart Syndrome
Isaac Syndrome
Isaacs Mertens Syndrome
Isaacs Pseudomyotonia Syndrome
Isaacs' Syndrome
Isaacs-Mertens Syndrome
Myokymia, Continuous
Myokymia, Myotonia, Muscle Wasting, And Hyperhidrosis
Myokymias, Continuous
Neuromyotonia
Neuromyotonia, Acquired
Pseudomyotonia
Pseudomyotonia Syndrome of Isaacs
Quantal Squander
Syndrome of Continuous Muscle Activity
Tree number(s): C05.651.392
C10.668.829.425
Scope note: A rare neuromuscular disorder with onset usually in late childhood or early adulthood, characterized by intermittent or continuous widespread involuntary muscle contractions; FASCICULATION; hyporeflexia; MUSCLE CRAMP; MUSCLE WEAKNESS; HYPERHIDROSIS; TACHYCARDIA; and MYOKYMIA. Involvement of pharyngeal or laryngeal muscles may interfere with speech and breathing. The continuous motor activity persists during sleep and general anesthesia (distinguishing this condition from STIFF-PERSON SYNDROME). Familial and acquired (primarily autoimmune) forms have been reported. (From Ann NY Acad Sci 1998 May 13;841:482-496; Adams et al., Principles of Neurology, 6th ed, p1491)
Allowable Qualifiers: BL blood
CF cerebrospinal fluid
CI chemically induced
CL classification
CN congenital
CO complications
DG diagnostic imaging
DH diet therapy
DI diagnosis
DT drug therapy
EC economics
EH ethnology
EM embryology
EN enzymology
EP epidemiology
ET etiology
GE genetics
HI history
IM immunology
ME metabolism
MI microbiology
MO mortality
NU nursing
PA pathology
PC prevention & control
PP physiopathology
PS parasitology
PX psychology
RH rehabilitation
RT radiotherapy
SU surgery
TH therapy
UR urine
VE veterinary
VI virology
History Note: 2000; for ISAACS' SYNDROME use FASCICULATION 1995-1999
DeCS UI: 34193
Descriptor UI: D020386
Date Established: 2000/01/01
Date of Entry: 1999/11/03
Revision Date: 2019/05/17
Isaacs Syndrome - Preferred
Concept UI M0008237
Scope note A rare neuromuscular disorder with onset usually in late childhood or early adulthood, characterized by intermittent or continuous widespread involuntary muscle contractions; FASCICULATION; hyporeflexia; MUSCLE CRAMP; MUSCLE WEAKNESS; HYPERHIDROSIS; TACHYCARDIA; and MYOKYMIA. Involvement of pharyngeal or laryngeal muscles may interfere with speech and breathing. The continuous motor activity persists during sleep and general anesthesia (distinguishing this condition from STIFF-PERSON SYNDROME). Familial and acquired (primarily autoimmune) forms have been reported. (From Ann NY Acad Sci 1998 May 13;841:482-496; Adams et al., Principles of Neurology, 6th ed, p1491)
Preferred term Isaacs Syndrome
Entry term(s) Continuous Muscle Activity Syndrome
Continuous Myokymia
Continuous Myokymias
Gamstorp Wohlfart Syndrome
Gamstorp-Wohlfart Syndrome
Isaac Syndrome
Isaacs Mertens Syndrome
Isaacs Pseudomyotonia Syndrome
Isaacs' Syndrome
Isaacs-Mertens Syndrome
Myokymia, Continuous
Myokymia, Myotonia, Muscle Wasting, And Hyperhidrosis
Myokymias, Continuous
Neuromyotonia
Pseudomyotonia Syndrome of Isaacs
Quantal Squander
Syndrome of Continuous Muscle Activity
Acquired Neuromyotonia - Narrower
Concept UI M0335867
Preferred term Acquired Neuromyotonia
Entry term(s) Neuromyotonia, Acquired
Pseudomyotonia - Related but not broader or narrower
Concept UI M000641915
Preferred term Pseudomyotonia



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