Hi,
I am a 30 yrs old woman currently diagnosed for chronic depression due to low serotonin levels, at the moment on medications that seem to work fine. I became curious about hypersensitivity, since I can tickle my fingertip with a fingertip in the same hand. According to multiple studies and basic human fysiology, that should not be possible. I would like to know why I can do that? I always have been able to do that, so it is not a byproduct of the medication, as far as I can remember, I have always been able to.