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.
Some types of infection that may cause swelling on one side of the face are: 1  Sinusitisâaffects the nasal sinuses. 2  Abscessâcan be on the gum, near the tonsils or in a tooth. 3  Osteomyelitisâinfection of bones of the face. 4  Ocular infections like blepharitis, conjunctivitis or keratitis. 5  Cellulitisâa type of skin infection.