Hello and hope you are doing well.
The symptoms mentioned could be caused by cervical spondylosis. Sometimes repetitive injuries or strain can also produce these symptoms. A disorder called fibromyalgia can produce these symptoms (tenderness). Please consult your primary care physician who will carry out blood tests and x rays to rule out these conditions. In the meantime you can take OTC pain medication Ibuprofen. Ensure to take this medication after food to avoid gastritis.
Hope this helped and do keep us posted.