The effect of different treatment regimes on intracranial pressure (ICP), degree of hydrocephalus and clinical outcome was evaluated in 81 children with tuberculous meningitis. 24 children underwent CSF shunting, while 57 with communicating hydrocephalus were randomly assigned to three treatment groups: antituberculous drugs only; or additional intrathecal hyaluronidase or oral acetazolamide and furosemide in addition to antituberculous treatment. The addition of acetazolamide and furosemide was significantly more effective in achieving normal ICP than antituberculous drugs alone. No difference was found in mortality or number of disabled survivors between groups. Of those surviving, nearly two-thirds with stage II tuberculous meningitis were mildly disabled and nearly one-half with stage III were severely disabled at follow-up, emphasising the need for early diagnosis of tuberculous meningitis in the young child.