I have movement in different part of my body (forehead,chest,breast),this usually happens especially when am angry or excited. What do I pin these on?[b][/b]

The condition you present with is known as somatization.i.e. translation of emotion/psychological conflicts into 'physical' symptoms.
It becomes a disorder once it affects your day to day functioning, in which case it would be called a Somatization disorder.

It's quite common, especially in the developing world where having emotional problems is stigmatized and considered a weakness, however it's not life threatening. There are no laboratory investigations that would 'reveal' the diagnosis, but it's still advisable to get your Doctor to first check you out.

The healing, however, starts once you understand that it won't kill you!

I hope that helps.