Conditions

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The anterior cruciate ligament (ACL) is one of the four main ligaments in the knee that gives the knee and leg flexibility and allows it to move easily.


Anterior cruciate ligament (ACL) tears are some of the most common forms of injuries encountered by athletes. They occur when one of the four main ligaments in the knee, called the ACL, tears, leaving the knee less stable.


An abdominal aortic aneurysm, also called AAA or triple A, is a bulging, weakened area in the wall of the abdominal aorta (the largest artery in the body) resulting in an abnormal widening or ballooning greater than 50 percent of the vessel's normal diameter (width).


Pap tests are used to screen for cervical cancer. Abnormal results may require additional testing to determine if you are at risk of developing cervical cancer.


Placenta placentation occurs in about one in 500 births and refers to a condition where the placenta grows deeply into the wall of the uterus.


Absence seizures, also called petit mal seizures, are sudden yet brief losses of consciousness that do not cause any sort of lethargy afterwards. They may be triggered by hyperventilation, and are sometimes mistaken for daydreaming...


Achalasia is a rare disease of the muscle of the esophagus that occurs when the lower esophageal sphincter fails to open and let food pass into the stomach. As a result, patients with achalasia have difficulty swallowing food.


An Achilles tendon injury is an injury that happens to the largest tendon in the human body: the fibrous tissue that connects the two large muscles in the back of your calf with your heel bone. These muscles (the gastrocnemius and the soleus) create the power needed to push off with your foot or rise up on your toes.


Achilles tendon repair is the term used to refer to the multiple options for treatment for an Achilles tendon rupture. These injuries are quite common and often require surgery to repair. The Achilles tendon is the strong fibrous cord that connects the two large muscles in the back of your calf to your heel bone. These muscles (the gastrocnemius and the soleus) create the power needed to push off with your foot or rise up on your toes.


An acoustic neuroma, also called a vestibular schwannoma, is a noncancerous growth or tumor on the auditory nerve near the inner ear. The auditory nerve carries sound impulses from the ear to the brain.


Learn about Acquired Arteriovenous (AV) Fistula diagnosis, symptoms, causes and treatments at the Northwell Health Brain Aneurysm Center and Cerebrovascular Surgery and Endovascular Neurosurgery Center.


Acute lymphoblastic leukemia (ALL) is a type of cancer that causes the body to make too many white blood cells (lymphocytes). Unlike regular white blood cells, these lymphocytes, called leukemia cells, cannot fight infection very well.


Physicians at Northwell Health specialize in caring for patients with acute pain. The palliative care professionals take a multidisciplinary approach to manage your pain, stress and related symptoms of serious illness to improve your quality of life...


Acute vascular thrombosis occurs when a blood clot obstructs a vein. Blockages in these vessels can slow or even stop blood flow and cause serious consequences. Different types of vascular thrombosis occur in different parts of the body.


Learn more about how the behavioral health specialists at Northwell Health treat a wide range of addictive disorders.


Learn more about adenomyosis, a condition that occurs when the lining of the uterus grows into the muscular wall of the uterus, and the treatment approach at Northwell Health.


Several tumor types can develop in the adrenal glands, which sit on the kidneys. These two small glands produce hormones which help to control certain bodily responses, a balance frequently disrupted by tumors...


Adrenal diseases can cause the adrenal glands to produce too much or not enough hormones, including sex hormones and cortisol. These adrenal diseases can cause a variety of symptoms that range from mild to life-threatening...


Adult normal pressure hydrocephalus is a mild, difficult-to-diagnose type of hydrocephalus, a condition commonly referred to as “water on the brain.” The condition causes an excess of cerebrospinal fluid (CSF) in cavities within the brain, called ventricles...


Learn about Adult Normal Pressure Hydrocephalus symptoms, diagnosis and causes at Northwell Health’s Normal Pressure Hydrocephalus Center.


Learn more about age related macular degenration, symptoms and world-class treatments available at Northwell Health.


Hepatitis is the inflammation of the liver. It results in liver cell damage and destruction. Alcoholic hepatitis is a complex problem and can lead to chronic liver disease and cirrhosis...


Alpha-1 antitrypsin (AAT) deficiency is an inherited condition where a patient lacks the sufficient volumes of AAT protein to protect the alveoli (the small sacs in the lungs that exchange oxygen for carbon dioxide)...


According to the National Institute of Neurological Disorders and Stroke, Alzheimer's disease is a progressive, neurodegenerative disease that occurs when nerve cells in the brain die...


Learn more about the eye care services available at Northwell Health.


Amnesia is a loss of memory caused by damage to areas of the brain necessary for processing memories. In some cases, the episode of memory loss is temporary, also known as transient global amnesia...


Learn about amputation and how it may be used at Northwell Health Cancer Institute to remove bone cancer.


Anal cancer is the abnormal growth of cells in the anus, which is the opening at the end of the rectum. Anal cancer is not common and is often curable.


Learn about Aneurysm diagnosis, symptoms, causes and treatments at the Northwell Health Brain Aneurysm Center and Cerebrovascular Surgery and Endovascular Neurosurgery Center.


Angina (chest pain) indicates an underlying heart problem such as coronary heart disease, which is a result of one or more blockages in the coronary arteries. It also may signal coronary microvascular disease, which affects the heart’s smallest coronary arteries.


An ankle fracture occurs when one or more than one bone that makes up the ankle joint—and possibly its ligaments—breaks at or near the joint. Every year, 184 people out of every 100,000 sustain ankle fractures. This number has been going up (and the broken ankles have been getting more serious) in the last 30 years due to the increased activity of older people that has accompanied the aging of the “baby boomers.” Emergency rooms saw 1.2 million visits in 2003 because of ankle fractures alone.


Ankylosing spondylitis (AS) is a type of arthritis that affects the spine. "Ankylosing" means stiff or rigid, "spondyl" means spine, and "itis" refers to inflammation...


Learn how anoxia/hypoxia brain injuries are treated at the Traumatic Brain Injury Center, part of Northwell Health Neuroscience Institute


Antiphospholipid syndrome (aPL) is an autoimmune disease in which the body produces large amounts of antiphospholipid antibodies. Phospholipids are a special type of fat containing phosphate that makes up the outer walls of the body's cells...


Learn more about the wide range of anxiety disorders and how the behavioral health specialists at Northwell Health treat this disease.


The aorta, the body's largest artery, delivers oxygenated blood to the rest of the body. The heart pumps blood out of the left ventricle, through the aortic valve, and into the aorta. Aneurysm is the primary problem that may affect the aorta; the blood vessel may become enlarged beyond its normal size.


Aortic aneurysms are an abnormal enlargement of the body’s largest artery, the aorta. They come in two forms: thoracic, which are located in the chest, and abdominal, which are located in the abdomen.


Aortic valve regurgitation occurs when the aortic valve does not close tightly and blood leaks back into the heart's pumping chamber when the left ventricle relaxes.


Aortic valve stenosis is a buildup of calcium deposits on the heart valve, which obstructs blood flow because the narrowing of the valve prevents it from opening properly.


Learn about Arnold-Chiari Syndrome diagnosis, symptoms, causes and treatments at Northwell Health’s Chiari Institute.


An irregular heartbeat is an arrhythmia. A normal heart rate is 50 to 100 beats per minute, but arrhythmias and abnormal heart rates don't necessarily occur together. Arrhythmia symptoms can occur with a normal heart rate, or with heart rates that are slow or rapid.


Inorganic arsenic compounds are used to preserve wood, as pesticides and in some industries. Arsenic can get into air, water and the ground from wind-blown dust...


Coronary arteries are the blood vessels that supply blood directly to your heart muscle. Arterial blockage often can be diagnosed using a cardiac catheterization.


Arteriosclerosis is a condition that occurs when arteries harden and fail to adequately distribute blood throughout the body, which can limit oxygen flow to organs. Atherosclerosis is a subset of the condition which results from the buildup of plaque and other substances in the artery walls.


Learn about arteriosclerotic (vascular) dementia diagnosis, symptoms, causes and treatments at Northwell Health


Learn about Arteriovenous (AV) Fistula diagnosis, symptoms, causes and treatments at the Northwell Health Brain Aneurysm Center and Cerebrovascular Surgery and Endovascular Neurosurgery Center.


Learn about arteriovenous malformations and treatments at the Northwell Health Brain Aneurysm Center and Center for Cerebrovascular Surgery and Endovascular Neurosurgery.


Arthritic deformities are caused by rheumatoid arthritis which can damage bones, joints and tissues of the foot. Rheumatoid arthritis is a chronic disease that causes inflammation of the joints...


Arthritis of the elbow is a condition in which the elbow’s cartilage is injured or worn. This is a common condition in the elderly population, as one of the leading causes of arthritis is the deterioration of the cartilage over time...


Arthritis of the hip is a condition that causes the hip joint and surrounding connective tissue to be inflamed, causing pain, swelling and limited movement of the hip. Depending on the type of hip arthritis, symptoms can range from pain and swelling in the joints to difficulty using or moving the joint in a normal way.


Arthritis of the knee is a condition that causes inflammation, pain, swelling and limited movement of the knee joint and connective tissues around the knee. Arthritis is one of more than 100 types of rheumatic diseases (diseases that affect joints and connective tissues).


Shoulder and elbow arthritis are conditions in which the joints in your shoulders and elbows are inflamed.


Basal joint arthritis is a degenerative disease that wears down the cartilage surrounding the joint. Cartilage is a protective covering that surrounds the ends of the bones and allows them to glide and move smoothly. Without the cartilage, the bone ends rub against one another, causing both friction and damage to the bones and the joint.


Asbestos is a mineral fiber that was added to many buildings and to certain products for strengthening, heat insulation and fire resistance. Most products today are not made with asbestos...


Astigmatism is a condition in which an abnormal curvature of the cornea can cause two focal points to fall in two different locations, making objects up close and at a distance appear blurry.


Learn about Ataxia diagnosis, symptoms, causes and treatments at Northwell Health Neuroscience Institute’s Nerve Disorders Center.


The risk factors of atrial fibrillation (A-fib) can be life threatening. Learn more about A-fib diagnosis, treatment and procedures available at The Heart Institute at Staten Island University Hospital, part of Northwell Health.


Atrial septal defect (ASD) is a common structural heart defect that can be present at birth (congenital). It is a hole in the septum (wall) that separates the two upper chambers (atria) of the heart.


Atrioventricular (AV) canal defect, also known as AV canal defect, refers to a large hole in the center of the heart that prevents the separation of all four heart chambers and requires surgical repair. 


Atrioventricular canal defect (AV canal defect) refers to a large hole in the center of the heart that prevents the separation of all four heart chambers and requires surgical repair.


Learn about Atypical Parkinsonian Syndromes (APS) diagnosis, symptoms, causes and treatments at Northwell Health’s Movement Disorder Center.


Autism spectrum disorder (ASD) refers to a group of conditions that cause challenges with social interactions, repetitive behaviors, communication and navigation of the world in a socially appropriate manner.


Hepatitis is the inflammation of the liver, resulting in liver cell damage and destruction. In autoimmune hepatitis, the body's own immune system destroys the cells of the liver...