Your mention of a creepy-crawly feeling makes me think of something nerve related. My first thought was whiplash but you said no injuries. Have you seen a doctor about it or had any tests yet? If it doesn't seem to be deep within the body, then maybe an orthopedic doctor could help - bone and cartilage there plus soft tissue. They'll likely want to order a scan of some sort.
I am not sure about the creepy crawly problem, but I also have a nagging pain that seemingly came out of no where. The pain I have is mostly sharp, but dull at resting and it wraps around to my chest (imagine drawing a line from the bottom of your scapula underneath your arm and to your pectoral muscles near your armpit). Occasionally I have pain in my upper arm too. Weird thing for me is that the pain is REALLY sharp if I take a very deep breath in or if I yawn. I also experience pain when I drive, put my arm behind my back, lay on the opposite side (not sure why that is), lift anything over 2lbs. at shoulder height, put my head back as if I am looking at the sky, or turn my head to the opposite side. I also have a grinding and popping sound in my should sometimes, but not always.
I have been to 4 doctors, 3 of them Orthopedics. The 1st was a shoulder specialist. He ordered an MRI or my shoulder (but did not include my scapula though that was my chief complaint) and when the films came back he said I was not having a shoulder problem. He was looking for a torn rotator cuff or impingement. Then he sent me for an MRI of my Cervical spine and when the films came back hesaid I have lost my lordosis (neck curve) and have a very mildly bulging disk at C5-C6. Then he sent me for an EMG and told me I have some nerve irritation in my elbow and at my C7 nerve root. Then he sent me to a spine specialist. The spine specialist said nothing was wrong with my neck and gave me a subacromial steroid injection mixed with a numbing agent and in 10 minutes when my pain was still there he said I was not having a 'mechanical' problem and sent me for 8 different blood tests... looking for lyme's disease, lupus, arthritis, cancer, and Inflammation. I became irritated with this office for a number of reasons, bedside manner and lack of organization being the biggest reasons, so I decided to seek a 2nd opinion.
I saw another spine specialist yesterday who told me having blood work run at this point was an unnecessary procedure BTW, I had the blood work done before he told me that and everything was fine. This doctor checked me out thoroughly and determined that my issue is not in my spine as the 1st shoulder specialist thought and that it is in fact in my shoulder. (FYI- the 1st 3 doctors didn't examine me thoroughly at all, in fact, they didn't even touch me or look at my back) He believes I have something Scapulothoracic going on, such as bursitis or bone spurs. I see the 5th doctor tomorrow.
Sorry for the long reply, I guess I needed to get that off my chest!
The Content on this Site is presented in a summary fashion, and is intended to be used for educational and entertainment purposes only. It is not intended to be and should not be interpreted as medical advice or a diagnosis of any health or fitness problem, condition or disease; or a recommendation for a specific test, doctor, care provider, procedure, treatment plan, product, or course of action. MedHelp is not a medical or healthcare provider and your use of this Site does not create a doctor / patient relationship. We disclaim all responsibility for the professional qualifications and licensing of, and services provided by, any physician or other health providers posting on or otherwise referred to on this Site and/or any Third Party Site. Never disregard the medical advice of your physician or health professional, or delay in seeking such advice, because of something you read on this Site. We offer this Site AS IS and without any warranties. By using this Site you agree to the following Terms and Conditions. If you think you may have a medical emergency, call your physician or 911 immediately.