lay on a flat surface where your head and arms can hang off. have pressure (trigger point) applied to the hot spot while your head arms are completely relaxed. (elbows are good for this) for at least 90 seconds. if the person is good at this and strong enough, same approach, but have them rotate your arms through a range of motion (painful) with the pressure applied. should feel knotty and fibrotic, but with continued therapy it can reverse it being chronic for you.
also lay on your back . affected side , same arm, over your eyes like you are blocking from being able to see. nose in armpit. pressure applied to the pec minor. should be some real tenderness there. (postural issue) it will take some digging (thumbs, hard), but once you find it, should burn a little to a lot. again pressure and ROM w/ pressure. This is probably where the problem is originating from, but it is referring to your neck. (I am guessing of course, but this is the protocol I have used for years when someone says to me what you typed)
hope it helps relieve the annoyance you are experiencing
-c