Browse our Health Library to learn about treatments, conditions, and how Cedars-Sinai can support your healthcare needs.

Showing 1 - 30 of 51 results.

Detailed information on animal bites and rabies, including symptoms, diagnosis, treatment, and prevention

Rabies in Children

Rabies is a viral infection that attacks the nervous system. Once symptoms develop, it is often fatal. But a rabies vaccine, or a series of vaccines, given soon after contact with an animal infected with rabies can prevent the illness.

Radiation Exposure from X-rays in Children

X-rays are a kind of imaging test that provides your healthcare provider with information about structures inside the body. These tests expose children to low doses of radiation.

Radiation Therapy

Radiation therapy uses radiation [the spread of energy as waves, rays or particles] to kill cancer cells. This is also known as radiotherapy. Radiation therapy is often done after surgery that leaves most of the breast. This includes ...

Radiation-Induced Vasculopathy

Vasculopathy is a general term used to describe any condition that affects the blood vessels. Certain treatments, such as radiation used for cancer, can cause vasculopathy. When this occurs, it is known as radiation-induced vasculopathy....

Radiologically Isolated Syndrome (RIS)

The availability of magnetic resonance imaging (MRI) has led to an increase in the detection of abnormal brain findings even in cases when there are no outward symptoms. When these findings are similar to what is seen in patients with ...

Rage Attacks

Rage attacks are sudden, out-of-control bursts of anger. These explosive outbursts can start without warning. They may also seem to be out of proportion to what triggered the episode. Rage attacks are different than tantrums. Tantrums ...

Rare and Hereditary Causes of Stroke

A stroke occurs when a blood vessel that supplies blood to the brain is blocked (ischemic stroke), leaks or bursts (hemorrhagic stroke), damaging or killing nerve cells in the brain. As a result, the part of the body controlled by the ...

Rasmussen's Encephalitis

Encephalitis is inflammation of the brain. One cause of this inflammation may be white blood cells attacking the body's own tissues and cells. This autoimmune disorder is known as Rassmussen's encephalitis (RE). RE is linked to seizures ...

Rathke Cleft Cyst

Rathke cleft cysts are noncancerous fluid-filled growths that develop between the parts of the pituitary gland at the base of the brain. They develop while a baby is growing in the uterus. A Rathke cleft cyst develops from a piece of the...

Reactive Arthritis (Reiter's Syndrome)

Reactive arthritis is a type of arthritis that occurs due to an infection. Arthritis is when joints become inflamed and painful. Reactive arthritis is not contagious. It's also known as Reiter's Syndrome. It mostly affects men ages 20 to...

Reading Epilepsy

Epilepsy is a disorder that results in repeated seizures. A seizure is unusual electrical activity in the brain. Epilepsy can be triggered by different events. When it is triggered by reading, it is known as reading epilepsy.

Reconstructive Breast Surgery

When some or all of the breast is removed, surgery may be needed to rebuild the breast. This operation is known as breast reconstruction. This is often done after a partial or complete mastectomy. You should talk to a plastic surgeon ...

Rectal Prolapse

If the rectum drops out of its normal place within the body and pushes out of the anal opening, the condition is called rectal prolapse.

Refractory Epilepsy

Some people with epilepsy will have or eventually develop refractory epilepsy. This means that medicines don't work well, or at all, to control the seizures.

Relapsing-Remitting Multiple Sclerosis

Relapsing-remitting multiple sclerosis (MS) is a type of multiple sclerosis that causes flare-ups with periods of remission in between. Most people diagnosed with MS start off with this type.

Renal Vascular Disease

Renal vascular disease affects the blood flow into and out of the kidneys. It may cause kidney damage, kidney failure, and high blood pressure.

Respiratory Distress Syndrome (RDS) in Premature Babies

Respiratory distress syndrome (RDS) is a common problem in premature babies. It causes babies to need extra oxygen and help with breathing.

Respiratory Gating and Motion Management

Sometimes tumors move during involuntary body movements, such as when a person breathes in and out. Respiratory gating and motion management is a type of radiation technology that senses and accounts for motion during radiation therapy. ...

Respiratory Syncytial Virus (RSV) in Children

RSV is a viral illness that causes symptoms such as trouble breathing. It’s the most common cause of inflammation of the small airways in the lungs (bronchiolitis) and pneumonia in babies.

Restless Legs Syndrome (RLS)

Restless legs syndrome is a sleep disorder that causes creepy, crawly feelings in your legs. This often happens when you are trying to go to sleep or have been sitting for a long time.

Restrictive Cardiomyopathy

Restrictive cardiomyopathy, or RCM, is when the chambers of the heart become stiffer over time. Though the heart is able to squeeze well, it is not able to relax between beats normally. This makes it harder for the heart to fill with ...

Retinitis Pigmentosa

Retinitis pigmentosa is the name of a group of eye diseases that are passed down in families. All of them affect the retina. All of the diseases cause a slow but sure decline in eyesight.

Retinoblastoma in Children

Retinoblastoma is a rare cancer of the retina of the eye. The retina is in the back of the eye. It’s the part of the eye that receives light. Retinoblastoma is the most common tumor affecting the eye in children. It almost always occurs ...

Retinopathy of Prematurity

Retinopathy of prematurity is an eye problem that happens to premature babies. The retina lines the back of the eye. It receives light as it comes through the pupil. From there, the optic nerve sends signals to the brain. Retinopathy of ...

Reversible Cerebral Vasoconstriction Syndrome (RCVS)

Reversible cerebral vasoconstriction syndrome (RCVS) is a group of disorders characterized by severe headaches and a narrowing of the blood vessels in the brain. RCVS is reversible and patients often recover within three months; the ...

Revision Hip Surgery

When a replacement joint wears out, loosens or develops a problem, it can be resurfaced or replaced in a joint revision operation. Using regular X-ray examinations, the orthopedic surgeon can detect and monitor any changes, and plan for ...

Reye Syndrome in Children

Reye syndrome is a rare but very serious illness that causes brain swelling and liver damage. It can also affect all of the body’s organs.

Rh Disease

Rh disease occurs during pregnancy. It happens when the Rh factors in the mom’s and baby’s blood don’t match. It may also happen if the mom and baby have different blood types.

Rhabdomyosarcoma in Children

Rhabdomyosarcoma is a type of cancer. It starts in cells that grow into skeletal muscle cells. The cells are called rhabdomyoblasts. Skeletal muscles control all of a person’s voluntary muscle movements. The cancer is most common in ...

Showing 1 - 30 of 51 results.
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