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Neurology & Nervous System Disorders
Why Do I Have a Headache All the Time? Common Causes and When to See a Doctor
Frequent headaches can be caused by migraine, tension, dehydration, poor sleep, medication overuse, vision problems, or other conditions. Learn the most common causes of persistent headaches, what symptoms require medical attention, and when you should see a doctor.
Neurology & Nervous System Disorders
Parkinson’s Disease Diagnosis: Symptoms, Tests, and When to See a Doctor
Parkinson’s disease cannot be diagnosed with a single blood test or brain scan. Learn which symptoms are important, how neurologists make the diagnosis, when MRI or DaTscan may be useful, and how doctors distinguish Parkinson’s disease from other forms of parkinsonism.