Low blood sugar can cause uncomfortable symptoms, such as dizziness and confusion, and can quickly become serious if left untreated.
Disease
Keratitis
An inflamed, red eye can be a minor nuisance — but sometimes it means a more serious problem. Find out about symptoms, treatment and prevention for this potentially dangerous eye condition.
Disease
Lymphedema
Damaged or removed lymph nodes can affect how lymph fluid drains. Fluid buildup leads to swelling. Treatments include compression and massage.
Disease
Paraneoplastic syndromes of the nervous system
This group of conditions affects people who have cancer and occurs when parts of the immune system attack parts of the nervous system.
Disease
Multiple system atrophy
This rare condition affects movement, blood pressure and other functions of the body.
Disease
Graves' disease
Learn about the symptoms, causes and treatment of this immune system condition that results in too much thyroid hormone.
Disease
Heatstroke
Know the signs and what to do for this dangerous increase in body temperature.
Disease
Hyperoxaluria and oxalosis
Learn about symptoms, causes, diagnosis and treatment for these rare kidney problems.
Disease
Posterior cortical atrophy
This rare neurological syndrome that's often caused by Alzheimer's disease affects vision and coordination.
Disease
CSF leak (Cerebrospinal fluid leak)
Cerebrospinal fluid leaks may start in the brain or spine, causing headaches, dizziness and other symptoms.
Disease
Vasculitis
This swelling and irritation of the blood vessels may thicken and weaken blood vessel walls. It can restrict blood flow and damage organs.
Disease
Spinal headaches
These headaches can happen after a spinal tap procedure or spinal anesthesia, and usually don’t require treatment.