Are these errors in FA? (2013, page 91) - 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 Forum USMLE Step 1 Discussion Forum: Let's talk about anything related to USMLE Step 1 exam

Thread Tools Search this Thread Display Modes
Old 07-13-2013
USMLE Forums Guru
Steps History: Not yet
Posts: 315
Threads: 115
Thanked 161 Times in 85 Posts
Reputation: 171
First Aid Are these errors in FA? (2013, page 91)

They have Glossitis listed under niacin deficiency...but instead, shouldn't it be listed under riboflavin deficiency?

In addition, for niacin deficiency, it says Sever deficiency leads to pellagra (which I understand), but then it says...which can be caused by Hartnup disease. I know I'm being picky here, but isn't Hartnup just a mild form of niacin deficiency?

ok, nvm. i just did some googling around, and looks like it's correct. but wouldn't riboflavin simply be more associated with Glossitis as a hallmark feature? i just found it odd to see Glossitis not listed there, but it is added to niacin deficiency.

Last edited by ReggieMiller; 07-13-2013 at 07:10 AM.
Reply With Quote Quick reply to this message

Old 07-14-2013
USMLE Forums Scout
Steps History: Step 1 Only
Posts: 31
Threads: 6
Thanked 14 Times in 10 Posts

In riboflavin deficiency there is also glossitis which gives characteristic magenta colored tongue.
As for pellagra it can be also caused by Hartnup disease, because in this case there is defective neutral amino acid transporters on renal and intestinal cells. Tryptophan (precursor of Niacin) is one of the neutral amino acid which is excreted. So decreased tryptophan absorption leads to low niacin and niacin deficiency itself causes pellagra
Reply With Quote Quick reply to this message
The above post was thanked by:
dr mumble (07-17-2013), parag03 (07-15-2013)


First-Aid, USMLE-Books

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
MTB CK Errata (Errors and Corrections) dr-ahmed USMLE Step 2 CK Forum 8 10-14-2013 02:36 PM
My CS Errors je355804 USMLE Step 2 CS Forum 8 05-18-2013 05:59 AM
Master The Boards Errors dr-ahmed USMLE Step 2 CK Forum 6 08-05-2011 10:11 AM
USMLE World Errors docoftheworld USMLE Step 2 CK Forum 3 06-17-2011 06:41 PM
Webinar Event Information: Residency Application Forensics - The Top 200 Errors Made by US and International Medical Graduates: Errors 140 to 159 ACA IMG Residency Match Forum 0 06-08-2011 12:58 PM

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)