Absence seizure

Absence seizures typically last only a few seconds, but can occur dozens of times a day.

Achilles tendon rupture

Acoustic neuroma



Although the absence of menstruation (amenorrhea) is seldom serious, the condition can often be linked to an underlying problem requiring treatment.


Amyotrophic lateral sclerosis

Amyotrophic lateral sclerosis (ALS) — often known as Lou Gehrig's disease — is a degenerative condition causing loss of control of voluntary muscles.

Anal cancer

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

Ankylosing spondylitis is an inflammatory arthritis that affects your spine and nearby joints. Over time, your spine may become stiff and immovable.

Aortic aneurysm




Ataxia describes lack of muscle coordination while performing voluntary movements. A sign of an underlying condition, ataxia can affect any part of your body.

Atrial septal defect

Atypical hyperplasia of the breast

Avascular necrosis

Back pain

Baker's cyst

Bell's palsy

Benign paroxysmal positional vertigo (BPPV)

Bladder cancer

Blood in urine (hematuria)

Bone metastasis

Bone spurs

Brain aneurysm

Breast cancer

Broken ankle/broken foot

Broken leg

Broken leg — Comprehensive overview covers symptoms, diagnosis and treatment of this type of fracture.

Broken wrist/broken hand


Brucellosis is an infectious disease that spreads from animals to people, mainly via unpasteurized dairy products. Travelers should take special care to avoid infection.



Carotid artery disease

Castleman disease

Cerebral palsy

Cerebral palsy — Comprehensive overview covers symptoms, causes and treatment of this movement disorder.

Cervical dystonia

Cervical dystonia is a neurological movement disorder affecting your neck. This painful condition occurs in children and adults and is most common in women.

Cervical spondylosis

Chest pain

Chiari malformation

Chiari malformation is an uncommon condition in which brain tissue extends into the spinal canal, causing headaches and other potentially serious symptoms.

Childhood schizophrenia

Childhood schizophrenia is confusing and heart wrenching. Learn about managing this serious psychotic disorder.

Chronic daily headaches

Chronic traumatic encephalopathy

Churg-Strauss syndrome

Churg-Strauss syndrome is a rare disorder marked by blood vessel inflammation that affects organs throughout the body. Asthma is the most common sign.


Coarctation of the aorta


Complex regional pain syndrome

Complex regional pain syndrome is a chronic, painful disease that typically affects an arm or leg that was recently injured or infected.

Cough headaches

Creutzfeldt-Jakob disease

Crohn's disease

Cyclic vomiting syndrome

Cyclic vomiting syndrome can last for hours or days and shares many triggers with migraines.

Cystic fibrosis

Deep vein thrombosis


Diffuse idiopathic skeletal hyperostosis (DISH)

Dilated cardiomyopathy

Dislocated shoulder


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.


Ductal carcinoma in situ (DCIS)




Encephalitis is inflammation of the brain usually caused by a viral infection. Severe cases can cause brain damage, even death.


Enlarged heart

Enlarged heart is often a sign of a serious heart condition. Find out causes and treatments for enlarged heart.

Enlarged liver

Exercise headaches

Eye melanoma

Fibrous dysplasia

Foot drop

Frontal lobe seizures

Frontal lobe seizures can produce many odd behaviors, including bicycle pedaling motions and pelvic thrusting. Seizures often occur during sleep.

Frontotemporal dementia


Frozen shoulder

Gallbladder cancer


Gallstones often don't cause symptoms. But if you have a gallbladder attack, you're not likely to forget it.


Gaucher's disease

Golfer's elbow

Grand mal seizure

Graves' disease


Gynecomastia, enlarged breasts in males, is a common problem. Find out about treatments and how to cope.

Hamstring injury

Heart failure

Heart murmurs

Herniated disk

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.

High potassium (hyperkalemia)

Hip fracture

Hip labral tear

Hodgkin's lymphoma

Horner syndrome

Hurthle cell cancer



Incompetent cervix

Inflammatory bowel disease (IBD)

Inflammatory breast cancer

Intracranial hematoma

Invasive lobular carcinoma

Kidney cancer

Knee bursitis

Knee pain

Krabbe disease

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.


Left ventricular hypertrophy

Legg-Calve-Perthes disease

Legg-Calve-Perthes disease is a rare childhood hip condition that requires specialty care.


Liver disease

Liver hemangioma

Liver hemangioma is the most common type of noncancerous (benign) liver mass. Learn how doctors treat liver hemangioma.

Lobular carcinoma in situ (LCIS)

Lung cancer


Meniere's disease


Menstrual cramps

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?



Multiple myeloma

Multiple system atrophy (MSA)


In myelofibrosis, healthy bone marrow is replaced with scar tissue, leading to severe anemia and fatigue.


Naegleria infection

Nasal polyps

Nasal polyps, inflammation-related growths in the nasal passages or sinuses, can block the flow of air and fluid in your nose.

Nasopharyngeal carcinoma

Neck pain

Nonalcoholic fatty liver disease

Nonalcoholic fatty liver disease is associated with obesity and diabetes. Lifestyle changes may prevent it from becoming serious.

Non-Hodgkin's lymphoma

Optic neuritis

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.

Osteochondritis dissecans


Pancreatic cancer

Pancreatic cancer is often fatal. Find out which new treatments offer hope.

Pancreatic cysts


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.

Paraneoplastic syndromes of the nervous system

Patellar tendinitis

Patent ductus arteriosus (PDA)



Pinched nerve

A pinched nerve occurs when pressure is applied by surrounding tissues. This pressure disrupts the nerve's function, causing pain, tingling or numbness.

Placenta accreta

Placenta previa

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

Plantar fasciitis is a common cause of heel pain. It generally clears up with the help of simple treatments for pain and inflammation.

Polycystic kidney disease


Posterior cruciate ligament injury

Less common than an ACL knee injury, a torn posterior cruciate ligament can be painful and sideline you for months. Find out more.

Posterior prolapse (rectocele)

Post-polio syndrome

Precocious puberty

Precocious puberty is a rare condition in which the physical signs of puberty begin to develop too early in children.

Primary biliary cirrhosis

Primary lateral sclerosis (PLS)

Primary lateral sclerosis (PLS) — Comprehensive overview covers symptoms, diagnosis of uncommon motor neuron disease.

Primary sclerosing cholangitis

Progressive supranuclear palsy

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.


Prostate cancer

Pseudotumor cerebri

Pseudotumor cerebri — Comprehensive overview covers symptoms, causes, treatment of increased pressure inside the skull.

Psoriatic arthritis

Some people with psoriasis may develop joint pain called psoriatic arthritis. Get the basics here.

Pulmonary embolism

Pulmonary valve stenosis

Rectovaginal fistula

Recurrent breast cancer

Rett syndrome

Reye's syndrome

Sacral dimple

Salivary gland cancer


Schizophrenia causes delusions, hallucinations and behavior changes. The good news is that new medications can often effectively manage schizophrenia symptoms.


Sex headaches

Shaken baby syndrome

Sheehan's syndrome

Sheehan's syndrome is a rare pituitary gland disorder that occurs in women usually as a result of severe blood loss during childbirth.

Sinus headaches


Soft tissue sarcoma

Spinal cord injury

Spinal headaches

Spinal stenosis

Sprained ankle

Sprains and strains

Stress fractures

Stress fractures are tiny cracks in a bone. Simple steps can help prevent this common overuse injury.

Swollen knee


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.

Tapeworm infection

Temporal lobe seizure

Thoracic outlet syndrome

Thoracic outlet syndrome is a group of disorders that occur when the nerves or vessels in the shoulder area (thoracic outlet) are compressed.

Throat cancer


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.

Thumb arthritis

Thunderclap headaches

Torn meniscus

Twisting the knee can cause a common knee injury known as a torn meniscus. Treatment sometimes includes surgery.

Toxic hepatitis

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.

Transient global amnesia

Transient ischemic attack (TIA)

Transverse myelitis

Transverse myelitis — inflammation of the insulating material that covers nerve cells in your spine (myelin) — causes pain, muscle weakness and other problems.

Traumatic brain injury

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.

Trigeminal neuralgia

Tuberous sclerosis

Uterine prolapse

Vascular dementia


Ventricular fibrillation

Vocal cord paralysis

Vulvar cancer


Wilms' tumor

Wilson's disease

Wrist pain

Zollinger-Ellison syndrome

Aug. 17, 2013