Photophobia (Light Sensitivity)

Photophobia, or light sensitivity, is an intolerance of light. Sources such as sunlight, fluorescent light and incandescent light all can cause discomfort, along with a need to squint or close your eyes.
photophobia is a common symptom of migraine headaches. These are severe headaches that can be triggered by a number of factors, including hormonal changes, foods, stress, and environmental changes. Other symptoms include throbbing in one part of your head, nausea, and vomiting.
is a vexing problem for patients and physicians alike. Although extreme light sensitivity was first described in the 1930s, its origins and management remain elusive even today.
sensitivity to light is the inability to tolerate light, medically known as photophobia. In someone who is light sensitive, any type of light source (sunlight, fluorescent light, incandescent light) can cause discomfort.
A few brain conditions can cause photophobia, including:
Meningitis (swelling of the protective coverings of your brain and spinal cord)
Serious brain injury
Supranuclear palsy (a brain disorder that causes problems with balance, walking, and eye movement)
Tumors in your pituitary gland.

hotophobia symptoms may include:

Sensitivity to light
Pain or discomfort
Headache
Nausea
Excessive squinting or blinking
Burning sensation
Excessive tearing
There are many reasons why someone might suffer from sensitivity to light. Photophobia is not a disease it is a symptom of many different diseases, disorders, and conditions.
Conditions associated with photophobia:
Posterior segment disease
Headache type conditions
Traumatic Brain Injury (TBI)
Blepharospasm;
Progressive Suparnuclear Palsy (PSP)
Psychiatric conditions

treatment:
Taking supplements and adapting your diet to deal with vitamin deficiencies. Sensitivity to light is a common problem with people who have low levels of vitamins B and A, so supplementation can be useful.
Eat more almonds and cheese, which contain riboflavin. This substance has been found to be useful in migraine sufferers where photophobia is a typical symptom.