According to NetWellness, lower back pain on the left side is a common symptom of kidney stones. Kidney pain typically begins on the left side of the lower back and travels to the abdomen and trunk as the stones move thr... More »

Upper left side back pain can be caused by acute pancreatitis, Healthline says. Although the pain manifests mostly in the upper left side of the abdomen, it can spread to the left side of the back and left shoulder blade... More »

Diverticulitis, angina and gastritis are three diseases that cause left side pain on a human body, according to Mayo Clinic. Many conditions that cause left side pain are not serious, such as gas pains or pulled muscles,... More »

The most common cause of back pain in the left kidney area is kidney stones, according to Healthline. Other possibilities include a blockage stopping the flow of urine and causing it to back up into the kidneys, inflamma... More » Health Pain & Symptoms

There are many possible conditions that cause pain on someone's left side, such as a heart attack, explains the Harvard Medical School. Pain can also be caused by a slipped disk, says Healthline. More »

There are several conditions that can cause the left side of the face to swell, including a blocked salivary gland, as stated by WebMD. Other causes include salivary gland disorders, according to Healthline. More »

Pain on the left side of the head is generally caused by a type of headache, according to Mayo Clinic and WebMD. People who experience the pain formore than 15 days a month for several months in a row are considered to h... More »