Lots of possibilities but it is most likely that what youre experiencing is a 'Canon A Wave' due to ectopy such as a PAC.
It would be a good idea to get reassessed and probably get a 'Holter Monitor' if you want to be certain. This question is best suited for 'Heart Rhythm' as its probably related to an electrical issue as opposed to a valve issue.
Though I should ask; is this pulsation continuous or does it come and go?
If youre skinny it could also just be nothing. If the pulsation is continuous and you dont have symptoms. That's most likely. If it comes and goes its most likely rhythm related in your case
Also I looked couple of cannon A waves examples on youtube, seems that pulse on those examples is located in the most lowest part of the neck on sides, mine is located upper on that normal place where you put finger to feel pulse. Also if relevant small pulse is also visible on lowest middle part of neck...
Are you seeing a pulse or column of blood rise?
Are you seeing a pulse or column of blood rise?
Video does of course help. Try to get one breathing normally and one after talking a really deep breath and holding it in if possible.
Here you go guys, quality is not the best, back camera of my mobile phone is filled with dust so I recorded with front camera, 3 videos with normal and one with deep breath (this one I recorded at night so quality is a little lower that other parts). Left side of neck is in focus (more visible pulse than on right) and in the end of video I recorded low middle neck pulse. So is this normal, should one EKG free me of all doubts and worry?? Please watch in 1080p resolution, seems that youtube lowered the quality of my videos:
https://www.youtube.com/watch?v=5OVU9R1iIGk
https://www.youtube.com/watch?v=1qFcdzGlPc8
https://www.youtube.com/watch?v=MsmjGbV77oU
and with deep breath
https://www.youtube.com/watch?v=vVvJcu0xy4U
And yes I am skinny and have pronounced Adam Apple:)