masonkingcobraThalamic pain syndrome would involve dysesthesias on the entire contralateral body so more than just the face. Also it occurs often after post-stroke. Additoinally, these dysesthesias appear weeks/months later
I also choose medulla, b/c this patient presented w/ pain, but not any abnormalities in sensation.
Pain is mediated by spinal trigeminal nucleus located in Medulla, not Pons