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 +0  (nbme20#15)

Per UWorld; capsaicin found in chili peppers causes excessive activation of TRPV1 (transmembrane channel), which increases intracellular calcium that results in long-lasting dysfunction of nociceptive nerve fibers (defunctionalization). It also causes release and depletion of Substance P, causing at first burning and erythema but over time causes decreased pain sensation.

chandlerbas  also topical Rx for post herpetic neuralgia

 +2  (nbme20#15)

Per UWorld; capsaicin found in chili peppers causes excessive activation of TRPV1 (transmembrane channel), which increases intracellular calcium that results in long-lasting dysfunction of nociceptive nerve fibers (defunctionalization). It also causes release and depletion of Substance P, causing at first burning and erythema but over time causes decreased pain sensation.





Subcomments ...

submitted by dr_jan_itor(18),

Can anyone answer why this one can't be F. Beta thalasemia major? I was thinking becaues of his anemia and the "european descent" which includes the mediteranian europeans. Unless NMBE writers think that european only means the ones with extra white people lol

dickass  European implies northern european (they even specified the patient was a person of pallor), mediterranean descent is usually implied by country of origin or by straight-out writing 'mediterranean'. +  
poisonivy  The MCV is normal, thalassemias are microcytic anemias, that hint helps to rule out the thalassemias. However, I got it wrong, not sure why it cannot be a homozygous mutation in the ankyrin gene +