title: Head injuries persistent post-concussion symptoms.
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D001924:Brain Concussion / Q000150:complications; D002648:Child; D002675:Child, Preschool; D006259:Craniocerebral Trauma / Q000150:complications*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D013997:Time Factors