Hello,My name is Sm,mia and I have been smoking marijuana for the past 2 years.  I just recently started getting pains on my chest and sometimes it travels like to my neck and head and onto my arms.  I got an EKG done and it came out perfectly normal, so its not my heart.  These pains do occure more when I argue, get man, or yell.  Sometimes i get sharp needle like pains on my left and righ side.  I was doing research and my left side of my neck hurts its calles the sternocleidomastoid.  Please Help me.  Do i need to seek medical attention?
Respected user, Welcome to Chat Doctor.come have evaluated your query thoroughly.* This is not sternocleidomastoid related issue.* This is due to muscular twitches from the use of marijuana. Hope this makes it clear. Regards.