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.
HAGS!!! Your heart is on the left side of your chest, right where you would put your right hand for the pledge of allegiance. When your heart pains, you may mistake it for a shoulder pain or even a back pain; you may even think the pain is in your left breast.The pain is sometimes mistaken for a neck pain.