Does anyone remember this Star Trek TNG episode?

Question

I have a vague memory of a TNG episode, does anyone remember the name so I could watch it again?

There was a guy who was really weird, almost like he was autistic. During the course of the episode, they came accross a space ship that was actually an organism but the crew had all died so the space ship was dying too because it had a symbiotic relationship with the crew. So the autistic guy ends up bonding with the ship.

It isn't "Galaxy's Child." Was it not TNG? It's driving me crazy! Thanks!

Answer 1

Is it Tin Man?

Answer 2

There is an autistic character in one of the novels (Grounded: see source). I am not aware of any autistic character in any of the TV episodes.