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USMLE Step 1 Mnemonics Mnemonics, acronyms, reminders, and memorizing tips for the USMLE Step 1.

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Old 06-29-2014
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Idea! Other causes of DM

This is a Dr. Mnemosyne original mnemonic

For more kick-ass mnemonics visit:drmnemosyne.tumblr.com

Keep in mind that diabetes mellitus is more than just classic type 1 and 2. DM is a syndrome of hyperglycemia and can have many causes other than beta-cell destruction (type 1) or obesity and age ("classic" type 2).

DM's other causes:

Steroids; anti-HIV drugs; newer antipsychotics; thiazides. Pancreatic: pancreatitis; surgery (>90% pancreas is removed); trauma; pancreatic destruction (heamochromatosis, cystic fibrosis); pancreatic cancer. Cushing's disease; acromegaly; phaeochromocytoma; hyperthyroidism; pregnancy. Others: acanthosis nigricans; congenital lipodystrophy; glycogen storage diseases.
p. 198 8th Oxford Handbook of Clinical Medicine

Now how do you remember all that? Just recall that FAT CHAPS can have other causes for their DM than obesity. One cause for each letter in the first word, and two causes for each letter in the second:

F - Pheochromocytoma

A - Acromegaly

T - Thiazides


C - Cushing's disease, Congenital lipodystrophy

H - HIV-meds, Hyperthyroidism

A - Antipsychotics, Acanthosis nigricans

P - Pancreas, Pregnancy

S - Steroids, Strorage disease (glycogen)

Background information:

p. 198 8th OHCM
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