TY  - CHAP
M1  - Book, Section
TI  - Movement Disorders
A1  - Xia, Yaqin
A2  - South-Paul, Jeannette E.
A2  - Matheny, Samuel C.
A2  - Lewis, Evelyn L.
PY  - 2020
T2  - CURRENT Diagnosis & Treatment: Family Medicine, 5e
AB  - Movement  disorders  (MDs)  are  a  broad  spectrum  of  motor  and  nonmotor  disturbances  arising  from  the  dysfunction  of  subcortical  motor  control  circuitry,  including  basal  ganglia  and  thalamus,  as  well  as  other  parts  of  the  nervous  system,  involving  the  cortex,  cerebellum,  and  central  and  peripheral  autonomic  nervous  systems.  Patients  suffering  from  MDs  have  normal  muscle  strength  and  sensation,  but  their  normal  voluntary  motor  activities  are  influenced  or  impaired  by  involuntary  movement,  alteration  in  muscle  tone  or  posture,  and  loss  of  coordination  or  regulation—either  facilitation  or  inhibition—of  pyramidal  motor  activities  as  a  result  of  malfunction.  MDs  can  be  classified  into  the  following  categories  on  the  basis  of  their  clinical  manifestations:  tremor,  chorea  and  choreoathetosis,  dystonia,  myoclonus,  tics,  and  ataxia.  MDs  involve  less  movement  (hypokinesia  or  akinesia),  excessive  movement  (hyperkinesias),  or  both  (Table  44–1).  
SN  - 
PB  - McGraw Hill
CY  - New York, NY
Y2  - 2024/04/19
UR  - accessmedicine.mhmedical.com/content.aspx?aid=1173717453
ER  -