Headaches are only a symptom of hypermature cataracts, a progressed form of cataracts that have become completely white, according to Medical News Today. At this point, sufferers may also experience inflammation and pain... More »

Headaches are classified as either primary or secondary, and primary headaches are caused by problems with the structures in the head that are sensitive to pain. Secondary headaches are caused by any one of a number of u... More »

Primary headaches can be caused by consuming alcohol, skipping meals, eating certain foods, stress or a lack of sleep, state Mayo Clinic. Secondary headaches can be precipitated by several conditions, such as having acut... More »

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Visual halos can be caused by cataracts, migraine headaches and damage to the cornea, explains Healthline. Individuals with eye diseases such as glaucoma may also experience visual halos when looking at certain objects. ... More »

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Retinal separation, or detachment, occurs when part of the interior lining at the back of the eye, known as the retina, breaks away from the underlying tissue, Medical News Today states. Depending on the type of detachme... More »

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The best way to prevent fluid from accumulating around a knee joint is to avoid performing movements that strain or cause injury to the joint due to over-use, explains Medical News Today. Maintaining a healthy weight is ... More »

www.reference.com Health Conditions & Diseases

Abnormally low dopamine levels are the primary cause of Parkinson's disease, explains Medical News Today. When dopaminergic neurons in the brain's substantia nigra are severely impaired or fail to produce dopamine, a pat... More »