really need help remembering this tv episode or movie from the 90’s!

okay so i’m sorry but this is going to be quite vague because i was so young when i watched this. it was in the early 90’s. i really want to say it was from an x-files episode but it is possible it was from another tv show or possibly a movie. anyways the only thing i really remember was there was a young woman & she was in distress. like there was something wrong with her. she seemed like someone who was going through drug withdrawals or something but she wasn’t (i don’t think). i’m trying really hard to remember but i think she was hungry? like she really wanted something (possibly blood? for some reason i feel like she wanted to eat someone) and there were people with her trying to help her and i think they were all trying to get somewhere. there was one part i think they were in a tunnel and the girl was like biting her nails i think. like she wanted to eat her own hand or something. ugh i’m sorry that’s really all i can remember. i was only like 5 when i saw it. for some reason i really think it was from the x-files but like i said it could be from something else. i’ve been trying to figure it out for years and years so if somebody could help me out i would appreciate it so much!!!