Chronic central nervous system damage by environmental agents.
D000293:Adolescent; D002493:Central Nervous System Diseases / Q000209:etiology*; D002648:Child; D002675:Child, Preschool; D002908:Chronic Disease; D004777:Environment; D004781:Environmental Exposure; D006801:Humans; D007855:Lead Poisoning / Q000150:complications; D001523:Mental Disorders / Q000209:etiology*; D011832:Radiation Injuries; D011878:Radiotherapy / Q000009:adverse effects; D014006:Tinea Capitis / Q000532:radiotherapy