The number of brain haemorrhage patients in HCM City hospitals is on the rise and a large number are dying.
"People's failure to control their hypertension is the most popular cause of the disease, which makes blood vessel break and overflow into brain tissue," says Dr Nguyen Anh Tai, Head of the hospital's Neurology Faculty.
Cho Ray Hospital received about 1,200 patients during the first six months of this year.
About 35 per cent of the patients treated died, says Dr Tai.
The patients who survive often suffer from a loss of motor skills and physical mobility.
"The recovery rate for most patients is limited," he says.
The disease is preventable in 80 per cent of cases, but as Tai says the issue receives little attention from the public.
The abuse of drugs and alcohol can prompt the disease, he says.