I have had tenderness in the neck and under the jaw line particularly at the back left jaw. I also have a lump that comes and goes on the bone behind my left ear. I seem to have problems with allergies and often feel like the sinus are compacted an won't drain. My doctor gave me a script for Cetirizine to take by mouth at bedtime. I haven't used it consistently but I can't help but wonder what is going on. Perhaps I should see my dentist and an ENT ? I can't lose weight and I am tired most of the time.