Different headache types can cause pain on the left side of the head. The pain usually isn’t cause for worry. But if the pain is intense or doesn’t go away, there may be a more serious cause.

Left-Sided Headache Causes. Clinically referred to as “unilateral headaches,” headaches on one side of the head arise due to a variety of factors.

A headache on the left side of the head may be due to a migraine or cluster headache. It may also indicate more serious issues. Learn more here.

Experiencing a left-sided headache can be distressing, but understanding its causes can help ease your concerns. Learn from an expert; its causes, potential red flags and when you should see a doctor.

Spontaneous intracranial hypotension is a rare and often overlooked condition, but experts say everyone should be aware.

Cluster headaches happen on either the left or right side, rather than both sides. Many causes may be to blame for a headache on the top left side of your head, including a sinus infection in a ...