QUESTION: Glaucoma-Related Headache

ANSWER: Glaucoma is an eye problem that can cause a bad headache. When you have an acute glaucoma attack, you may see halos around lights or experience blurred vision. You may also suffer from a headache, extreme eye and forehead pain, vomiting, and red eye. To safeguard your vision, see an eye doctor (ophthalmologist) as soon as possible if you think that your headaches may be caused by glaucoma.