Deep research and expert guides on maintaining your visual health.
Vasospasm, Cold Hands, and Normal-Tension Glaucoma: The Raynaud’s Connection Glaucoma is usually linked to high eye pressure, but in normal-tension glaucoma (NTG) the optic nerve is damaged even when eye pressure is normal. Researchers have long suspected that blood flow problems play a role in NTG. In fact, many NTG patients have symptoms of vascular dysregulation (abnormal control of blood vesse...
Vascular dysregulation describes a problem with how blood vessels widen and narrow to control blood flow. Normally, the vessels respond to signals like temperature, oxygen needs, and activity level to deliver the right amount of blood; when dysregulation occurs, those signals are not followed properly and blood flow can be too much or too little. This can cause symptoms such as cold hands and feet, dizziness, headaches, or unusual sensitivity to temperature and light. The condition can be temporary or chronic, and it may occur by itself or with other health issues that affect circulation. Vascular dysregulation matters because blood flow is critical for every organ, and persistent poor regulation can contribute to symptoms or complications in the eyes, brain, and other tissues. Doctors assess it through a combination of medical history, physical exam, and tests that measure blood flow or vessel responses to temperature or stress. Treatment depends on the pattern and severity and may include lifestyle steps like keeping warm, staying hydrated, and avoiding triggers, as well as medications that help blood vessels behave more normally. Managing underlying conditions such as autoimmune disease or hormonal imbalances can also improve vessel behavior. While it can be uncomfortable and sometimes disabling, many people gain good symptom control with the right approach. If symptoms change or worsen, medical review is important to rule out treatable causes and prevent complications.
