I am very easily startled and flinch at everything. Nervous nelly?

Have quick response. Some people are very reactive and it helps to change your life a little and to focus on being very healthy. Take time for yourself and exercise every day, take deep breaths several times a job, eat healthy foods and laugh a lot.
Well. Do you sleep well? How is your stress level? Is this causing problems. Sweating a lot. A low dose bblocker can help the conversion of mental stress into physical responses. Being jumpy isnt necessarily an anxiety issue but the engine may be tuned kind of high; it can be a double edged sword. The answer will likely occur by sleep quality. If off it may be exacerbated by an anxiety, good luck.