Shingles and Light Sensitivity: What to Know

Shingles is caused by reactivation of the chickenpox virus in a nerve. A rash, tingling, burning pain, or blisters on one side of the forehead, nose, scalp, or face can occur when branches of the facial nerves are involved. Sensitivity to light may come from irritation near the eye, inflammation inside the eye, or a severe headache occurring with the illness.

A rash on the forehead or nose, a red or painful eye, blurred vision, watering, or discomfort when moving the eye can suggest eye involvement. These symptoms should not be watched at home because untreated inflammation can threaten vision. Light sensitivity can also occur with migraine or conjunctivitis, so the symptom alone does not identify its cause.

Arrange same-day medical advice if shingles is near the eye, on the face, or accompanied by light sensitivity. Antiviral treatment may be prescribed, and it is more helpful when started early. Do not put non-prescribed drops, creams, or household remedies in the eye.

Until you are assessed, rest in a dim room, use sunglasses outdoors if they make you more comfortable, and keep the rash clean and dry. Avoid touching the eye and wash your hands after touching the rash. Covering the blisters with loose clothing can reduce contact with people who have not had chickenpox or its vaccine.

Seek urgent care for vision changes, severe eye pain, a red eye, new swelling around the eye, weakness of the face, confusion, fainting, a stiff neck, repeated vomiting, or a severe or rapidly worsening headache. These features can indicate eye or nervous-system complications and need in-person examination.

Go to emergency care if light sensitivity occurs with a sudden severe headache, fever and neck stiffness, drowsiness, or difficulty speaking or moving. Do not drive if your vision is affected.

Ask whether the rash involves a nerve serving the eye, whether an eye examination is needed, which pain relief is suitable for you, and how to protect household contacts. Mention when the rash and light sensitivity began, any vision change, and whether you have had chickenpox or shingles before.