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Dr. Bob is Robert Hsiung, MD,
bob@dr-bob.orgShown: posts 1 to 6 of 6. This is the beginning of the thread.
Posted by DanielJ on April 7, 2006, at 9:36:07
The Antihistamine Ativan (did I spell it right?)
can be the cause of a sudden psychotic episode.
Posted by Caedmon on April 7, 2006, at 11:15:55
In reply to Strong antihistamines can cause Psychosis, posted by DanielJ on April 7, 2006, at 9:36:07
Ativan (lorazepam) is a benzodiazepine, not an antihistamine. It rarely rarely rarely if ever, causes psychosis.
High doses of antihistamines can cause "delirium", a state of mental confusion. Having attempted parasuicide in the past with Benadryl (diphenhydramine) myself, I know all about this. Mind you, that was on an entire bottle.
- C
Posted by linkadge on April 7, 2006, at 14:10:55
In reply to Re: Strong antihistamines can cause Psychosis, posted by Caedmon on April 7, 2006, at 11:15:55
Yeah my mother OD'd on benydryl said it wasn't fun. She said she went a little loopy.
Linkadge
Posted by med_empowered on April 7, 2006, at 16:35:12
In reply to Re: Strong antihistamines can cause Psychosis, posted by linkadge on April 7, 2006, at 14:10:55
yup...a lot of the older antihistamines have really strong anti-cholinergic action, so when you take massive amounts of them you can get drug reactions and i think sometimes psychotic reactions (toxic psychosis, I think its called).
Benzos like ativan sometimes induce rage reactions (in this respect, they're kind of like the barbiturates or alcohol) and sometimes, in extremely high doses, you can get bizarre behavior...usually its not a big problem, though (you can even use Ativan and Klonopin to help w/ psychosis and mania). Withdrawal sometimes causes psychotic rections, too (in addition to the occasional seizures).
Posted by Phillipa on April 7, 2006, at 21:55:17
In reply to Re: Strong antihistamines can cause Psychosis, posted by med_empowered on April 7, 2006, at 16:35:12
Ativan to me a benzo was very good. And very easy to change over to another one. Just did it. Love Phillipa
Posted by spriggy on April 8, 2006, at 0:29:04
In reply to Re: Strong antihistamines can cause Psychosis » med_empowered, posted by Phillipa on April 7, 2006, at 21:55:17
I had my first panic attack after being given Compazine in an IV in the hospital when I was pregnant.
It completely freaked me out; I felt like I wanted to crawl out of my skin. I was so uncomfortable and shakey. And yet, I had a weird feeling of happiness mixed with weird anxiety.
I do the same thing on Phenergen and SSRI's. It's the same feeling.
I can take small doses of Benadryl; that's it.
This is the end of the thread.
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