Psychotic patient with polydipsia - USMLE Forums
USMLE Forums Logo
USMLE Forums         Your Reliable USMLE Online Community     Members     Posts
USMLE Articles
Go Back   USMLE Forums > USMLE Step 1 Forum > USMLE Step 1 High Yield > USMLE Step 1 Classic Clues

USMLE Step 1 Classic Clues Classic clues seen in clinical case scenarios in USMLE Step 1 questions.

Thread Tools Search this Thread Display Modes
Old 08-06-2009
USMLE Forums Master
Steps History: 1+CK+CS+3
Posts: 742
Threads: 137
Thanked 2,462 Times in 441 Posts
Reputation: 2565
Smile Psychotic patient with polydipsia

A psychotic patient on phenothiazines therapy presents with polyuria, polydipsia and water deprivation test results in correction of urine osmolality.

Answer: Phenothiazine cause severe dry mouth to the point that the patient develops primary polydispia
Reply With Quote Quick reply to this message
The above post was thanked by:
amabates (06-21-2012), ceee (02-09-2014), daniyel (04-17-2011), futureresident (09-28-2010), ibukun (01-15-2011), Linc (10-18-2015), mashhour80 (02-21-2015), maverick doc (11-21-2012), Medman11 (08-04-2011), nikhil5001 (02-23-2010), noothan (04-17-2011), prionchatterjee (10-16-2010), Rani Kumar (11-18-2010), renew (08-07-2011), riya10 (08-04-2011), shanix7 (11-20-2014), sukar (02-04-2012), Valerie (04-17-2011), wahaha007 (01-10-2010), water (12-04-2012), Yaya (12-10-2013), zohra (05-05-2011)

Old 04-17-2011
USMLE Forums Scout
Steps History: CK Only
Posts: 20
Threads: 0
Thanked 11 Times in 4 Posts
Reputation: 21

this is because of anti muscarinic effect of these drugs..
Reply With Quote Quick reply to this message
The above post was thanked by:
arjun karri (07-02-2014), Medman11 (08-04-2011), Muhammad Majid (01-24-2015), Rani Kumar (05-16-2011), renew (08-07-2011), riya10 (08-04-2011), Yaya (12-10-2013)


Pharmacology-, Physiology-

Quick Reply

Register Now

In order to be able to post messages on the USMLE Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Medical School
Choose "---" if you don't want to tell. AMG for US & Canadian medical schools. IMG for all other medical schools.
USMLE Steps History
What steps finished! Example: 1+CK+CS+3 = Passed Step 1, Step 2 CK, Step 2 CS, and Step 3.

Choose "---" if you don't want to tell.

Favorite USMLE Books
What USMLE books you really think are useful. Leave blank if you don't want to tell.
Where you live. Leave blank if you don't want to tell.


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
Thread Thread Starter Forum Replies Last Post
primary polydipsia vs diabetes insipidus TAAOM USMLE Step 1 Forum 6 06-04-2011 04:17 AM
What to do with this hypertensive patient? Hohepa USMLE Step 2 CK Forum 8 05-24-2011 01:18 PM
$40 to be a 'patient' for a day Step2CS USMLE Links & Free Ads 0 07-07-2010 04:01 AM
Patient on Tirofiban? Farazdaq USMLE Step 1 Forum 2 03-15-2010 06:46 PM
Acute MI with painless yellow bumps on his elbows, knees, and ankles Farazdaq USMLE Step 2 CK Forum 2 03-02-2010 07:25 AM

RSS Feed
Find Us on Facebook
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

USMLE® & other trade marks belong to their respective owners, read full disclaimer
USMLE Forums created under Creative Commons 3.0 License. (2009-2014)