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Comprehensive Guide

Conditions That Cause Light Sensitivity: A Complete List

Over 30 medical conditions are linked to photophobia. Browse our comprehensive guide to diseases, disorders, and injuries that cause light sensitivity.

By Editorial Team

Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare provider for diagnosis and treatment.

Overview

Photophobia (light sensitivity) is rarely a condition on its own — it’s a symptom of an underlying medical issue. Over 30 known conditions can cause or worsen light sensitivity, ranging from common headache disorders to rare genetic diseases.

Neurological Conditions

Migraine

The most common cause of recurring photophobia. Up to 80–90% of migraine sufferers experience light sensitivity during attacks, and many have increased sensitivity between attacks as well.

Concussion & Traumatic Brain Injury

Light sensitivity is one of the hallmark symptoms of concussion, often persisting for weeks or months after the initial injury.

Meningitis

Photophobia is a classic triad symptom of meningitis (along with headache and neck stiffness). This is a medical emergency requiring immediate treatment.

Multiple Sclerosis

MS can cause optic neuritis and other visual disturbances that lead to increased light sensitivity.

Epilepsy

Some people with epilepsy are photosensitive, meaning flashing or flickering lights can trigger seizures.

Eye Conditions

Dry Eye Syndrome

Insufficient tear production or poor tear quality irritates the corneal surface, increasing light sensitivity significantly.

Cataracts

Clouding of the eye’s lens causes increased light scatter and glare sensitivity, particularly problematic when driving at night.

Corneal Conditions

Keratitis, corneal abrasions, and keratoconus can all cause significant photophobia due to disruption of the corneal surface.

Uveitis & Iritis

Inflammation inside the eye causes pain and marked light sensitivity, requiring prompt ophthalmological treatment.

Glaucoma

Certain types of glaucoma, particularly acute angle-closure, cause severe photophobia along with eye pain and vision changes.

Autoimmune & Inflammatory Conditions

Lupus (SLE)

Photosensitivity is a hallmark feature of lupus, affecting both the skin (sun-triggered rashes) and the eyes.

Fibromyalgia

Sensory sensitivity, including to light, is common in fibromyalgia patients as part of central sensitization.

Sjogren’s Syndrome

This autoimmune condition attacks moisture-producing glands, causing severe dry eye and associated photophobia.

Mental Health Conditions

Anxiety

Anxiety disorders can heighten sensory sensitivity, including to light. The relationship is bidirectional — light sensitivity can also increase anxiety.

Depression

Some evidence suggests depression can alter sensory processing, potentially increasing light sensitivity.

Developmental & Genetic Conditions

Autism Spectrum Disorder

Sensory processing differences in autism frequently include hypersensitivity to light and other stimuli.

Albinism

Reduced melanin in the iris and retina means significantly less natural light filtering, causing inherent photophobia.

Medication-Induced Photosensitivity

Over 100 medications can cause photosensitivity as a side effect, including:

Post-Surgical Light Sensitivity

Light sensitivity is common after eye surgeries including:

  • LASIK and PRK
  • Cataract surgery
  • Retinal surgery

This is usually temporary but can persist in some cases.

When to Seek Immediate Medical Attention

Seek emergency care if light sensitivity occurs with:

  • Severe headache + stiff neck + fever (possible meningitis)
  • Sudden vision loss in one or both eyes
  • Eye trauma or chemical exposure
  • Severe eye pain with nausea or vomiting (possible acute glaucoma)

Sources

  1. Digre KB, Brennan KC. “Shedding light on photophobia.” J Neuro-Ophthalmol. 2012;32(1):68-81.
  2. Wu Y, Bhatt N. “Photophobia: An Abnormal Sensitivity to Light.” American Academy of Ophthalmology. 2023.
  3. Katz BJ, Digre KB. “Diagnosis, pathophysiology, and treatment of photophobia.” Survey of Ophthalmology. 2016.

More in This Topic

Migraine and Light Sensitivity: Why It Happens & How to Manage ItWhy do migraines cause light sensitivity? Learn the neuroscience behind migraine photophobia, how to manage it during attacks, and which treatments work best.Concussion and Light Sensitivity: Causes, Duration & RecoveryLight sensitivity is one of the most common concussion symptoms. Learn why TBI causes photophobia, how long it lasts, and the most effective recovery strategies.Autism and Light Sensitivity: Sensory Processing in ASDLight sensitivity is extremely common in autism spectrum disorder, affecting 70–90% of autistic individuals. Learn the science and practical management strategies.Dry Eye and Light Sensitivity: Why It Happens & How to Treat ItDry eye syndrome is a leading cause of chronic light sensitivity. Learn the connection between dry eyes and photophobia, and which treatments provide the most relief.Multiple Sclerosis and Light Sensitivity: Causes, Symptoms & ManagementLight sensitivity is common in multiple sclerosis, affecting 40%+ of patients. Learn why MS causes photophobia and the most effective management strategies.Anxiety and Light Sensitivity: The Nervous System ConnectionCan anxiety cause light sensitivity? Yes — the nervous system link between anxiety and photophobia is well-documented. Learn how they're connected and how to manage both.
Last updated: April 6, 2025