Causes. Photophobia is linked to the connection between cells in your eyes that detect light and a nerve that goes to your head. Migraines are the most common cause of light sensitivity. Up to 80% of people who get them have photophobia along with their headaches.

What is the mechanism of photophobia?

One circuit involved in photophobia is a projection of melanopsin-containing retinal ganglion cells to thalamic nuclei that receive nociceptive inputs from the spinal trigeminal system. This mechanism can account for the ability of light to exacerbate the pain experienced by migraineurs.

Does photophobia go away?

This light sensitivity is often referred to as photophobia by medical professionals, and, for many, it can go away quickly. But for others, photophobia can be a persistent symptom of a diagnosed medical condition such as migraine, post-concussion syndrome or dry eye.