This infection may increase post-nasal drip. If you suspect that you have a sinus infection, you should see your physician to see if it needs antibiotic treatment. Chronic sinusitis occurs when sinus blockages persist, causing the lining of the sinuses to swell further.
Causes of Pain in Left Side Back. 1  Pregnancy: Back pain especially on the left side, is very common in pregnancy and happens for a few reasons. As the child develops in size, the uterus can pack torment delicate structures including nerves. 2  Kidney Infection: Kidney diseases can cause left side back pain.
Pain on left side of the abdomen can be triggered by a number of reasons. Symptoms are more common in women and the elderly due to ailments that are specific to these categories of people. Some of the common reasons that cause pain in this region are the left ovarian diseases or problems with left fallopian tubes. Crohnâs disease, irritable bowel syndrome, left ectopic pregnancy, diverticulitis, and left ulcerative colitis are the other more common causes of the left side abdominal pain.