Conditions

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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...


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...


There are many types of migraine headaches, one of which is Basilar Artery Migraine. This is a migraine which starts with an aura and is felt on both sides of the back of head...


Basilar artery syndrome causes a particular type of migraine, in which there is a disturbance in the brainstem or the lower part of the brain. This uncommon type of migraine headache usually starts with experiencing an “aura” with symptoms that include dizziness, double vision and a lack of coordination...


Bed sores (also known as pressure sores or decubitus ulcers) can occur when a person is bedridden, unconscious, unable to sense pain or immobile. Bed sores are ulcers that occur on areas of the skin that are under pressure from lying in bed, sitting in a wheelchair and/or wearing a cast for a prolonged period of time...


Bell's palsy is a disorder that arises suddenly, often within 72 hours, and hinders a person’s ability to control their facial muscles, resulting in paralysis of one or both sides of the face...


A benign brain tumor is a group of cells that don’t follow normal patterns of cell division; they develop into a mass of cells that do not have the characteristic appearance of a cancer...


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...


Benign skin growths are essentially a mass of cells that appear as a growth on the skin and come in a wide variety of forms. Alterations in the normal genetic growth and function of the skin also present in other ways such as discoloration or skin pigmentation disorders...


Bicep tendonitis is inflammation of the bicep tendon. A tough band of fibrous tissue, the bicep tendon connects the bicep muscle in the front of your upper arm to the top of your shoulder socket (glenoid)...


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.


Most spider bites produce only minor symptoms like localized itching and swelling. However, black widow spider bites are more serious and can cause a variety of painful symptoms that require treatment...


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...


Bleeding gums is a common symptom of the periodontal diseases, or gum diseases, such as gingivitis and periodontitis. Periodontal disease is a serious bacterial infection that destroys the gums and the surrounding tissues of the mouth...


Blepharitis is an inflammation of the eyelash follicles along the edges of the eyelids. This is usually a persistent, recurring problem for children that starts early in childhood and may last throughout the one’s life...


Blepharospasm is a neurological disorder causing a loss of control of the muscles around the eye resulting in a twitch or spasm or an involuntary extended closure of the eyelid longer than the typical blink, sometimes lasting minutes or hours...


A blister is a bubble on the skin containing fluid. Blisters are usually circular in shape. The fluid that forms underneath the skin can be bloody or clear...


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.


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)...


Brachial neuritis (BN) is a fairly rare inflammation of the network of nerves running from the cervical spine (neck) to the top of the thoracic spine (back) and into the axilla (armpit) and arms...


A brachial plexus injury, or lesion, is any damage made to the network of nerves running from the cervical spine (neck) to the top of the thoracic spine (back) into the axilla (armpit) and arms...


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.


Brain cancer is a disease of the brain whereby malignant cells multiply abnormally in the brain tissue. These cells grow into a mass of cancerous tissue (also called a tumor) that interferes with different brain functions, including memory, sensation and muscle control, as well as normal body functions...


Brain stem glioma is a type of tumor that involves the central nervous system?"the brain and spinal cord. Brain stem gliomas begin when healthy brain cells change, growing uncontrollably and forming a tumor...


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.


Bruxism is the term that refers to an incessant grinding and clenching of the teeth, unintentionally, and at inappropriate times. Bruxers (persons with bruxism) are often unaware that they have developed this habit, and often do not know that treatment is available until damage to the mouth and teeth has been done...


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


A bunion is a protrusion of bone or tissue around a joint. Bunions may occur at the base of the great toe or at the base of the little toe, and often occur when the joint is stressed over a period of time...


Burns are a type of traumatic injury caused by thermal, electrical, chemical or electromagnetic energy. Smoking and open flames are the leading causes of burn injury for older adults, while scalding is the leading cause of burn injury for children...


Bursitis of the knee occurs when fluid fills up the knee, causing the kneecap to become reddened, painful and swollen. In the body, small sacks of fluid called bursae are found around joints to protect and stabilize these important areas...