title: [Clinical features of 417 patients with chronic subdural hematoma].
abstract: OBJECTIVE
  To discuss the clinical features of chronic subdural hematoma (CSDH) in different age groups.
  
  
  METHODS
  A total of 417 patients with CSDH were divided into 3 groups: 0 to 39, 40 to 59 and elder than 60 years. We analyzed the clinical features in different groups, including sex, trauma history, potential hemorrhage factors, trauma to symptoms interval, encephalatrophy, onset symptom and hematoma volume.
  
  
  RESULTS
  The incidence of trauma, potential hemorrhage factors, encephalatrophy, consciousness disorders and paralysis increased with age, while the incidence of intracranial hypertension symptoms and seizures decreased with age (P<0.001). The trauma to symptom interval in the group elder than 60 was longer than in other groups (P<0.05) and the hematoma volume increased with age(P<0.05).
  
  
  CONCLUSIONS
  The clinical features of CSDH including onset symptoms, trauma history, potential hemorrhage factors, encephalatrophy, trauma to symptoms interval and hematoma volume vary in different age groups.
authors.affiliation: Department of Neurosurgery, Xiangya Hospital, Central South University, Changsha 410008, China.
authors.forename: Dun
authors.initials: D
authors.lastname: Yuan
authors.forename: Jie
authors.initials: J
authors.lastname: Zhao
authors.forename: Jingfang
authors.initials: J
authors.lastname: Liu
authors.forename: Xingjun
authors.initials: X
authors.lastname: Jiang
authors.forename: Xianrui
authors.initials: X
authors.lastname: Yuan
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D003937:Diagnosis, Differential; D005260:Female; D020200:Hematoma, Subdural, Chronic / Q000175:diagnosis*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D055815:Young Adult