Children as young as six have been treated for cannabis addiction in Manchester, a drugs expert has said.
Drug specialists also reported regularly seeing addicts aged eight and nine referred to them.
They said the children suffered from paranoia, sleeplessness, anxiety, depression and schizophrenia.
One drugs worker said the youngest child he had dealt with was six – and that addiction was usually just one of a series of problems youngsters face.
Under 10s treated for drug abuse