Descriptors Found: 1
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Descriptor English:   Muscle Spasticity 
Descriptor Spanish:   Espasticidad Muscular 
Descriptor Portuguese:   Espasticidade Muscular 
Synonyms English:   Clasp Knife Spasticity
Clasp-Knife Spasticity
Spasticity, Clasp-Knife
Spasticity, Muscle  
Tree Number:   C05.651.512
Definition English:   A form of muscle hypertonia associated with upper MOTOR NEURON DISEASE. Resistance to passive stretch of a spastic muscle results in minimal initial resistance (a "free interval") followed by an incremental increase in muscle tone. Tone increases in proportion to the velocity of stretch. Spasticity is usually accompanied by HYPERREFLEXIA and variable degrees of MUSCLE WEAKNESS. (From Adams et al., Principles of Neurology, 6th ed, p54) 
Indexing Annotation English:   skeletal muscle only; note category: not physiological; spastic paralysis: coord NIM with PARALYSIS (IM); spasticity in cerebral palsy: coord NIM with CEREBRAL PALSY only if musc spasticity is especially discussed
See Related English:   Spasm
History Note English:   1977 
Allowable Qualifiers English:  
BL blood CF cerebrospinal fluid
CI chemically induced CL classification
CO complications CN congenital
DI diagnosis DG diagnostic imaging
DH diet therapy DT drug therapy
EC economics EM embryology
EN enzymology EP epidemiology
EH ethnology ET etiology
GE genetics HI history
IM immunology ME metabolism
MI microbiology MO mortality
NU nursing PS parasitology
PA pathology PP physiopathology
PC prevention & control PX psychology
RT radiotherapy RH rehabilitation
SU surgery TH therapy
UR urine VE veterinary
VI virology  
Record Number:   9322 
Unique Identifier:   D009128 

Occurrence in VHL: