Hi, I am an 19 year old female. I noticed that I get goosebumps more often than normal and I get them randomly, even when its hot out. I noticed I get them when I think about past happy memories or things that excite me, and I know that is normal. I get them when I am just on the computer or doing homework though too. Sometimes when I get the goosebumps, a slight twitch goes on throughout my body. Do I have some sort of nervous system problem?