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Learn more about the BRCA mutation, which can put you at an increased risk of cancer, and how Northwell specialists can intervene.

Back pain is one of the most common conditions people suffer from, with nearly 9 out of 10 adults experiencing it at some point in their lives. Treatment varies case-by-case depending on the type of pain, duration, and cause...

Back and neck pain are among the most common conditions people suffer from. For some, back and neck pain is an annoyance or inconvenience; for others, it can be debilitating. Back and neck pain can also be a sign of serious underlying degenerative, neuromuscular, or musculoskeletal disorders.

Bacterial endocarditis is a rare but serious infection in the heart and/or valves. While this infection usually is associated with certain types of congenital heart defects, it also can occur in structurally normal hearts.

Meningitis is an infection of the membranes that cover the brain and spinal cord. Although rare, the bacterial type of meningitis is very serious and can cause brain damage, hearing loss, learning disabilities or even death...

Learn about Basilar Artery Migraine diagnosis, symptoms, causes and treatments at Northwell Health’s Headache Center.

A benign prostatic hypertrophy (BPH) is the non cancerous enlargement of the prostate. The prostate gland surrounds the urethra in males and produces a fluid that is used in the body’s creation of semen...

Learn more about benign skin growths and how they are treated at Northwell.

Bicuspid aortic valve refers to aortic valves that have only two leaflets, or flaps. Over time, the valve can become stenotic, resulting in varying degrees of obstruction across the valve.

Next to gallstones, cancer is the most common cause of bile duct obstruction. The majority of bile duct cancers develop in the part of the ducts that are outside the liver and are sometimes referred to as extrahepatic tumors.

Biliary cirrhosis is a rare form of liver cirrhosis caused by disease or defects of the bile ducts. Symptoms usually include cholestasis (accumulation of bile in the liver)...

Learn more about the symptoms and causes of bipolar disorder and how the behavioral health specialists at Northwell Health treat this condition.

Birth defects and malformations of the brain include neurofibromatosis type 1, tuberous sclerosis and Sturge-weber syndrome. Such defects, malformations and abnormalities of the brain or skull can be mild or severe and may affect brain growth.

Bladder cancer is the rapid, uncontrolled growth of abnormal cells in the bladder. The cancerous cells may spread through the lining into the muscular wall of the bladder.

Bladder frequency and urgency, commonly known as overactive bladder, is a condition characterized by the frequent need to urinate, urinary urgency, urge incontinence, bladder pressure or difficulty holding back a full bladder...

Pelvic or bladder pain is a common complaint among women. Its nature and intensity may fluctuate. In some cases, no disease is evident. The pain can be categorized as either acute, meaning the pain is sudden and severe, or chronic, lasting over a period of months or longer...

Learn more about the eye care services for blepharitis at Northwell Health.

Bone cancer is a condition in which cells grow abnormally within the bones. There are two types of bone cancer: primary bone cancer, which starts in the bones, and secondary bone cancer, which starts in another part of the body and travels to the bones. Secondary bone cancer is the most common of the two.

Stem cell transplant is the replacement of damaged bone marrow cells with healthy cells (stem cells). Stem cells are immature cells produced in the bone marrow that make more stem cells, red blood cells, white blood cells, and platelets. Stem cells used for transplants can be taken from bone marrow, from the bloodstream or from umbilical cord blood.

Bone metastases (or bone mets) are most often found in the spine, followed by the hip bone (pelvis), upper leg bone (femur), upper arm bone (humerus), ribs and the skull. The metastatic cells look and act like the malignant (cancerous) cells where the cancer began, and get the same care.

Botulinum toxin is a poisonous substance produced by a type of bacteria that occurs naturally in soil. The toxin can cause botulism, a rare but serious infection that affects the nervous system (brain, spinal cord and nerves)...

Brachytherapy is a radiation technique that places radioactive material inside the body very close to the tumor by using a radioactive substance sealed in needles, seeds, wires or catheters.

Learn about Brain aneurysm diagnosis, symptoms, causes and treatments at Northwell Health’s Neuroscience Institute.

A brain or spinal cord tumor is an abnormal growth of tissue within or around the brain.

A brain tumor is a growth in the brain that leads to increased pressure inside the skull and the destruction and compression of normal brain tissue, causing loss of function. A brain tumor may cause headaches and seizures as well as many other nervous system problems.

Breast cancer occurs when abnormal cells grow out of control in the breast. These cancer cells can spread within the breast to nearby lymph nodes and other tissues and parts of the body.

Learn about breast cancer, its types, diagnosis and care at the Northwell Health Cancer Institute.

Bronchiectasis is a condition in which the airways of the lungs begin to swell. It is often caused by irritation of the airways that keeps coming back. Sometimes it begins in childhood after having a severe lung infection or inhaling a foreign object.

Learn more about what causes bruxism and the treatments available at the award-winning Northwell Health.

Learn more about bulimia nervosa conditions, symptoms and treatment centers at Northwell Health.

A bunion is an enlargement of bone or tissue around the joint at the base of your big toe. The joint may be swollen and tender. The toe may turn toward the second toe.