Machado-Joseph Disease (MJD-III), also called spinocerebellar ataxia type III, is a rare, inherited, ataxia (lack of muscular control) affecting the central nervous system and characterized by the slow degeneration of particular areas of the brain...

Black Eye is a mobile photography app that allows users to take and edit photos with a variety of filters, effects, and tools. It also includes features such as face recognition, portrait mode, and a variety of other editing tools....

The botulism neurotoxin is one of the most potent, lethal substances known. Botulism is a disease caused by this neurotoxin (specifically A, B, E, or F type neurotoxin). The neurotoxin is produced by bacteria called Clostr...

A brain tumor is a mass or growth of abnormal cells in your brain. Many different types of brain tumors exist. Some brain tumors are noncancerous (benign), and some brain tumors are cancerous (malignant). Brain tumors can begin in your bra...

A brain tumor is a mass or growth of abnormal cells in your brain. Many different types of brain tumors exist. Some brain tumors are noncancerous (benign), and some brain tumors are cancerous (malignant). Brain tumors can begin in your bra...

A brain tumor is a mass or growth of abnormal cells in your brain. Many different types of brain tumors exist. Some brain tumors are noncancerous (benign), and some brain tumors are cancerous (malignant). Brain tumors can begin in your bra...

Cataracts are a clouding of the lens in the eye that affects vision. Most cataracts are related to aging. Symptoms may include blurry vision, poor night vision, sensitivity to light and glare, faded colors, halos around lights, and double vision i...

Best vitelliform macular dystrophy is an autosomal dominant genetic form of macular degeneration that usually begins in childhood or adolescence and slowly progresses to affect central vision. The age of onset and severity of vision loss are highl...

Giant Cell Arteritis (GCA) is a type of vasculitis, or inflammation of the blood vessels. It is a chronic inflammatory disorder that affects the large and medium-sized arteries, most commonly the temporal arteries. Symptoms of GCA include headache...

Idiopathic intracranial hypertension (IIH) is a neurological disorder characterized by increased pressure in the fluid surrounding the brain (cerebrospinal fluid). It is also known as pseudotumor cerebri. Symptoms of IIH include headaches, vision ...

Microvascular cranial nerve palsy is a condition caused by damage to the cranial nerves due to a stroke or other vascular event. It can cause a variety of symptoms, including double vision, facial weakness, difficulty speaking, and difficulty swal...

Migraine is a type of headache that is usually characterized by a throbbing or pulsing pain on one side of the head, accompanied by nausea, vomiting, and sensitivity to light and sound. It is a neurological disorder that affects about 12% of the p...

Multiple sclerosis (MS) is a disease that causes demyelination (disruption of the myelin that insulates and protects nerve cells) of spinal nerve and brain cells. Although the exact case is unknown, multiple sclerosis is considered ...

Myasthenia Gravis is an autoimmune disorder that affects the muscles and nerves. It causes weakness in the skeletal muscles, which are the muscles that control movement. Symptoms of Myasthenia Gravis include drooping eyelids, double vision, diffic...

Spinal headaches are a fairly common complication in those who undergo a spinal tap (lumbar puncture) or spinal anesthesia. Both procedures require a puncture of the membrane that surrounds the spinal cord and, in the lower spine, the lumbar and s...

Strabismus, commonly known as crossed eyes, is a condition in which the eyes are not properly aligned with each other. It is caused by a lack of coordination between the extraocular muscles, which control the movement of the eyes. Strabismus can c...

Tolosa-Hunt syndrome is a rare disorder characterized by severe periorbital headaches, along with decreased and painful eye movements (ophthalmoplegia). Symptoms usually affect only one eye (unilateral). In most cases, affected individuals experie...