My boyfriend is too sensitive too insecure and gets angry very easily,what kind of personality disorder is he?

I'm trying to figure is going on with my sisters boyfriend? so I am writing this for her as if it were me. This is for my younger sister. She doesn't have a email account.No names will only address as he/him. He is highly sensitive and insecure and gets angry easily if you say the wrong things to him. Any business place he walk into as a regular customer and he notice that the person who is serving him doesn't say hello he gets angry. Some people don't always say hello. I explained this to him and he still gets upset cursing like crazy. You can say one negative thing to him otherwise he will get very upset and it will linger for days. If you tell him he put on a little weight he put on a little weight he will get very upset, and tries to find something to throw back at you. He wants to be acknowledge by everyone. Especially my family, he needs to be told first before my mother and family. He lives at home with his mother and gets upset with me if I want to go and visit my mom for a few days out of state. My sister was diagnosis with cancer stage 2 and I wanted to spend a weekend with my mom and sister. He has a car that runs great and would not offer me a ride knowing I needed to go and did not have a car to drive since my license was expired I couldn't rent a car until I got my license renew, anyway I got ride and when I told him two days before my leaving he still got upset with me, telling me that I told him the last minute.It was not the last minute since I was leaving Friday and it was Wednesday when I told him,I only told two people which was my brother who I had to call since he was giving me a ride back and I needed to confirm that he would be giving me that ride back home . He got so upset he did not want to talk and rudely hung up. Yet,he doesn't offer me a ride knowing my sister had major surgery the week before and for me to travel by bus or train with a dog and a cat is impossible I don't trust anyone with my pets only my mom. I can't carry my dog on my shoulder since I injured my back and shoulder. He knew my dilemma but still would offer. Anyway, On my departure he didn't say bye or have a safe trip to your mothers since she live 800 miles from NY. He always gets upset even when I don't say anything to him. He thinks that if I limit my conversation I'm hiding something. I try not to say too much because I never know what will upset him. He doesn't want to talk to me about anything and when I asked him before if anything is bothering him he gets upset and says no and why would I think something is bothering him, so he shuts me out. I am living on the edge. I am only thankful he wants to see me twice a week. That is why I put up with him 5 hours one day on the weekdays and 1 hour on the weekend. I have known him for 11 years and only visited his home three times. We don't celebrate the holidays together I have his home number and his mom number so I know he lives at home. His father p away 9 years ago. It is hard for people to get along with him since he gets upset too easily and is too sensitive. I can figure out what is wrong with him. Does he have a personality disorder of some sort.