All are associated with decreased sense of smell except?: (A) Parkinsonism, (B) Kallmann Syndrome, (C) Gullain barre syndrome, (D) HIV infection
Answer is C. Gullain barre syndrome does not present with anosmia Non-motor symptoms of Parkinsonism are constipation, anosmia, and REM behavior sleep disorder. Kallmann syndrome presents with anosmia due to olfactory bulb agenesis/ hypoplasia. HIV infection can also affect olfactory bulbs leading to anosmia