I am working the Al Anon 12 step programme and I have an adult child who stopped using ketamine a few months ago. She is living with me at the moment and is showing some strange behaviour: talking to herself loudly and laughing, on the verge of manically. It is quite unsettling. I am walking the line between detachment, letting her live with the consequences of her actions, and not trying to persuade her to get help…she is defiantly resisting those who are trying to control what she does…and supporting her enough to love her with compassion and without judgment, while encouraging her, honestly and without denial, about the state of her life. I know she is deeply ashamed…she has said this more than once. I am aware that she has to choose to get help for it to be truly effective. My question is about the bizarre behaviour. I don’t really understand the psychological effects of ketamine. I’ve witnessed the loss of appetite, delusional behaviour, divorced from reality, agitation, pacing, depression and self harming. What I am unsure of is if I should be involving the medical profession regarding the manic laughing out loud and talking to herself. She walked out of the doctors angrily a few months earlier. Thanks. Any insights into any specific differences in handling ketamine from alcohol addiction would be much appreciated.