Monday, August 5, 2013

Didactics: July 23rd

by Christine Bishundat
Med Ed Committee 

On Tuesday July 23, 2013 Dr. Elizabeth Housman delivered an illuminating didactic presentation on fatigue. This is a seemingly simple symptom, but what makes it tricky is that there are a number of diagnoses to consider on a differential, ranging from depression/anxiety, diabetes/hypothyroid, renal failure, TB/mono/HIV, to a rheumatology problem to sleep apnea, or perhaps the patient is simply on beta blockers or another medication that is known to cause fatigue. 

Here we have an 85 year old woman with body aches, 10 pounds of weight loss, mild noromocytic anemia, renal failure, high ESR/CRP, and 3 weeks of fatigue. The best thing to do is to take a biopsy to diagnose Giant Cell Arthritis, the histology of which will show vasculitis of medium and large vessels, and distortion of the elastic lamina. We can then give her steroids to suppress the immune system if we're concerned with these rheumatology complications. An ophtho exam shows bilateral uveitis: redness, blurry vision, and eye pain.

Uveitis is actually a rare presentation of GCA. Vision loss in GCA is due to ischemia of optic nerve or retina or ischemia of posterior ciliary arteries. A lot of people with GCA have high platlet count as the thrombocytosis leads to increased risk of vision loss. But then why did she have renal failure? She wasn't eating or drinking much and still taking her Lisinopril medication.  

Key Points:
- Older folks are more prone to giant cell arthritis
- Dehydration with Lisinopril medication is something to look out for!

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