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.
Chest Pain on the Left Side and Heart Attack. Chest pain on the left side of the body is a classic sign that you may soon experience a heart attack. In most cases this pain is combined with other side effects. The pain in the chest is often described as pressure, squeezing, or fullness within the chest cavity.hen a person starts feeling chest pain it's likely that they will be concerned. Chest pain on the left side of the body can be even more frightening because this side effect is often associated with a heart attack.