Absence seizures typically last only a few seconds, but can occur dozens of times a day.
Although the absence of menstruation (amenorrhea) is seldom serious, the condition can often be linked to an underlying problem requiring treatment.
Amyotrophic lateral sclerosis (ALS) — often known as Lou Gehrig's disease — is a degenerative condition causing loss of control of voluntary muscles.
Though anal cancer is rare, incidence of anal cancer is increasing. Find out the symptoms and causes of cancer of the anal canal.
Ankylosing spondylitis is an inflammatory arthritis that affects your spine and nearby joints. Over time, your spine may become stiff and immovable.
Ataxia describes lack of muscle coordination while performing voluntary movements. A sign of an underlying condition, ataxia can affect any part of your body.
Broken leg — Comprehensive overview covers symptoms, diagnosis and treatment of this type of fracture.
Brucellosis is an infectious disease that spreads from animals to people, mainly via unpasteurized dairy products. Travelers should take special care to avoid infection.
Cerebral palsy — Comprehensive overview covers symptoms, causes and treatment of this movement disorder.
Cervical dystonia is a neurological movement disorder affecting your neck. This painful condition occurs in children and adults and is most common in women.
Chiari malformation is an uncommon condition in which brain tissue extends into the spinal canal, causing headaches and other potentially serious symptoms.
Childhood schizophrenia is confusing and heart wrenching. Learn about managing this serious psychotic disorder.
Churg-Strauss syndrome is a rare disorder marked by blood vessel inflammation that affects organs throughout the body. Asthma is the most common sign.
Complex regional pain syndrome is a chronic, painful disease that typically affects an arm or leg that was recently injured or infected.
Cyclic vomiting syndrome can last for hours or days and shares many triggers with migraines.
A blow to your joint can dislocate the bones that meet at that joint. Don't try popping them back into place yourself. Get medical help.
Encephalitis is inflammation of the brain usually caused by a viral infection. Severe cases can cause brain damage, even death.
Enlarged heart is often a sign of a serious heart condition. Find out causes and treatments for enlarged heart.
Frontal lobe seizures can produce many odd behaviors, including bicycle pedaling motions and pelvic thrusting. Seizures often occur during sleep.
Gallstones often don't cause symptoms. But if you have a gallbladder attack, you're not likely to forget it.
Gynecomastia, enlarged breasts in males, is a common problem. Find out about treatments and how to cope.
Back pain may mean you have a herniated disk — but not always. In fact, you can have disk herniation without pain. Here are the facts.
Caused by contractions of your diaphragm, hiccups are usually harmless. But rarely, hiccups may signal an underlying medical condition that requires treatment.
Krabbe disease is a rare, inherited disorder — most often affecting infants — that impairs functioning of the central nervous system and usually leads to early death.
Legg-Calve-Perthes disease is a rare childhood hip condition that requires specialty care.
Liver hemangioma is the most common type of noncancerous (benign) liver mass. Learn how doctors treat liver hemangioma.
A monthly period is bad enough. Add in painful menstrual cramps, and you may be cursing this thing called womanhood. How do you get relief?
In myelofibrosis, healthy bone marrow is replaced with scar tissue, leading to severe anemia and fatigue.
Nasal polyps, inflammation-related growths in the nasal passages or sinuses, can block the flow of air and fluid in your nose.
Nonalcoholic fatty liver disease is associated with obesity and diabetes. Lifestyle changes may prevent it from becoming serious.
Optic neuritis is an inflammation of the optic nerve, the structure that transmits visual information to your brain. Optic neuritis usually causes temporary vision loss.
Pancreatic cancer is often fatal. Find out which new treatments offer hope.
The pain of pancreatitis, an inflammation of the pancreas, can last for days, or in chronic cases, for years. Pancreatitis can lead to serious complications.
A pinched nerve occurs when pressure is applied by surrounding tissues. This pressure disrupts the nerve's function, causing pain, tingling or numbness.
Placenta previa is a pregnancy complication that can cause excessive bleeding before or during delivery. Treatment may include bed rest or a C-section birth.
Plantar fasciitis is a common cause of heel pain. It generally clears up with the help of simple treatments for pain and inflammation.
Less common than an ACL knee injury, a torn posterior cruciate ligament can be painful and sideline you for months. Find out more.
Precocious puberty is a rare condition in which the physical signs of puberty begin to develop too early in children.
Primary lateral sclerosis (PLS) — Comprehensive overview covers symptoms, diagnosis of uncommon motor neuron disease.
Progressive supranuclear palsy — a syndrome with many similarities to Parkinson's disease — has no effective treatment, but certain medications and self-care measures can help.
Pseudotumor cerebri — Comprehensive overview covers symptoms, causes, treatment of increased pressure inside the skull.
Some people with psoriasis may develop joint pain called psoriatic arthritis. Get the basics here.
Schizophrenia causes delusions, hallucinations and behavior changes. The good news is that new medications can often effectively manage schizophrenia symptoms.
Sheehan's syndrome is a rare pituitary gland disorder that occurs in women usually as a result of severe blood loss during childbirth.
Stress fractures are tiny cracks in a bone. Simple steps can help prevent this common overuse injury.
Syringomyelia is the development of a fluid-filled cyst within your spinal cord. It can cause a variety of neurological symptoms, including pain, weakness and stiffness.
Thoracic outlet syndrome is a group of disorders that occur when the nerves or vessels in the shoulder area (thoracic outlet) are compressed.
Thrombophlebitis occurs when a blood clot and swelling develop in a vein, typically in your leg. The cause often is prolonged inactivity or bed rest.
Twisting the knee can cause a common knee injury known as a torn meniscus. Treatment sometimes includes surgery.
Toxic hepatitis is liver damage that occurs when your liver isn't able to break down certain toxins — including common pain relievers such as Tylenol.
Toxoplasmosis is an infection caused by a parasite. It doesn't make most people ill, but infants and people with HIV/AIDS are at risk of complications.
Transverse myelitis — inflammation of the insulating material that covers nerve cells in your spine (myelin) — causes pain, muscle weakness and other problems.
While mild traumatic brain injury generally results in few long-term problems, more severe injury can cause several physical, emotional, behavioral, communication and cognitive problems.
Aug. 17, 2013
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