Pain in the low back can be a result of conditions affecting the bony lumbar spine, discs between the vertebrae, ligaments around the spine and discs, spinal cord and nerves, muscles of the low back, internal organs of the pelvis and abdomen, and the skin covering the lumbar area.
Chronic sinusitis Chronic sinusitis, or sinus infections, cause a stuffy or runny nose, tooth pain, fever, sore throat and more. Mononucleosis Mononucleosis is a viral infection causing extreme fatigue, sore throat, fever, rash, muscle aches, and more.
The infection causes inflammation in the lining of the mucus membranes of the sinus which swell up and cause pain and pressure around the eyes and cheek bones. Sinusitis, however, does not cause extreme facial swelling. Headache and upper respiratory infection are the hallmarks of acute sinusitis.