system
Given the following post, respond as if you're commenting on Reddit:
human
Are organs sensitive to touch?

If I could somehow touch one of my organs, would I feel it? I can push on any muscle or organ and I only feel it on my skin. But at the same time, liver shots exist which seems to me that you they do feel pain. I’m guessing organs only cause you pain during acute trauma and not regular activities but I’m curious what the truth is.
gpt
Touch sensors (discrete for pressure, vibration, temperature etc) are different from the proprioceptors like stretch or pressure sensors in internal organs, they inform different parts of your brain. So a real "touch sense" only applies to skin and mucosa (think mouth, nose, rectum etc).

Nerve endings sensing pain are another, different type of receptor, those exist in almost all organs (but not in every tissue). The brain for instance doesn't have them, only the vasculature, the 'wrapping' = meningues and the skull. Once you've reached the brain, it can't feel touch or pain if you avoid the vessels. Syphilis or other brain infections are painless.