Conditions

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Obesity is a serious, chronic disease that can inflect substantial harm to a person's health. Overweight and obesity are not the same; rather they are different points on a continuum of weight ranging from underweight to being morbidly obese...


Obstructive sleep apnea is a common disorder that can be very serious. It is the cessation of breathing that occurs during sleep. Usually, it is due to physical airway obstruction by the tissues surrounding and in the airway at some point between the nostrils and the larynx (voice box)...


It’s important to get an expert diagnosis when you are suffering from frequent headaches. One source of chronic headaches is occipital neuralgia. Caused by damage to the occipital nerves, located on the side of the head, occipital neuralgia has a variety of symptoms including: Chronic headache located in the back of the head and around or over the top of the head Aching, burning and throbbing pain that typically starts at the base of the head and radiates to the scalp Pain behind the eye Sensitivity to light Tender scalp Pain when moving the neck Causes of occipital neuralgia may be trauma (such as a head injury), physical stress on the nerve, repetitious neck contraction, flexion or extension or a result of a medical complication...


Occupational asthma is often a reversible condition, which means the symptoms may disappear when the irritants that caused the asthma are avoided. However, permanent damage can result if the person experiences prolonged exposure...


Oligodendroglioma tumors are generally soft and grayish-pink. Oligodendrogliomas come from oligodendrocytes, one of the types of cells that make up the brain’s glial or supportive tissue...


Because the shoulder is the joint in the human body with the greatest field of mobility, it is also prone to injury and instability. In some cases, some people - especially athletes such as pitchers and swimmers - can experience recurring dislocations...


Optic nerve gliomas are slow-growing tumors that typically affect children. They are also known as optic pathway gliomas. Optic nerve glioma is the most common primary neoplasm of the optic nerve...


Oral cancer is cancer found in the oral cavity (the mouth area). Oropharyngeal cancer is cancer found in the oropharynx (the throat area at the back of the mouth)...


Swelling can occur throughout the mouth for a variety of reasons. While most conditions that cause mouth swelling are not serious, there are several that are potentially life-threatening...


Orbital tumors can be either malignant or benign. They arise mainly within the orbit or from an adjacent source, such as the paranasal sinus, eyelid or intracranial compartment...


Chronic or acute pain that occurs in the face, jaws and mouth is called orofacial pain. Pain in these areas can be very distressing because it makes talking painful and difficult...


The foot and ankle specialists play an integral part in the orthopaedic surgery residency programs available at Northwell Health. Team members work with residents in the orthopaedic surgery residency programs at North Shore University Hospital and Plainview Hospital, giving them experience in the operative management of patients...


When it comes to hand and wrist care at Northwell Health, the physicians are not just treating patients. They are also educating those who treat patients and performing research to shape the future of treatment...


The joint replacement team works closely with the researchers at the Feinstein Institute for Medical Research to improve treatments for musculoskeletal injuries...


The orthopaedic research scientists and practitioners are constantly shedding new light and offering new hope for patients with chronic back pain and other conditions that impact the spine...


The sports medicine specialists work closely with the researchers at the Feinstein Institute for Medical Research to improve treatments for musculoskeletal system injuries, including cartilage regeneration and repair, meniscus repair, tendon repair and bone fracture augmentation and fusion...


The most common form of arthritis, osteoarthritis (OA) is also known as "wear and tear" arthritis, because it is caused by the slow and steady degeneration and thinning of the smooth articulate cartilage that covers the ends of bones...


Osteochondroma is a benign (noncancerous) tumor that grows slowly and usually begins near the ends of long bones. It may be identified at any age, though it typically develops during childhood as the bone grows...


Osteomyelitis is an inflammation or swelling of bone tissue that is usually the result of an infection. Osteomyelitis, or bone infection, can have a sudden onset, a slow and mild onset, or may be chronic osteomyelitis, depending on the source of the infection...


An osteopathic fracture is any fracture that occurs as a result of osteoporosis, a disease which affects the bone density of aging individuals. There are no specific symptoms for osteoporosis ?" it is known primarily for the resulting increase in risk for fractures, which can be quite dangerous for an elderly person...


Osteoporosis is a degenerative disease that causes a reduction in bone density, or thinning of the bones, resulting in an increased risk for bone weakness, fractures, and breaks...


Osteoradionecrosis (ORN) is bone that has died as a complication of radiotherapy. It is the most serious, possible complication facing patients with oral cancer...


Osteosarcoma (also known as osteogenic sarcoma) is a malignant bone tumor found primarily in adolescents and young adults. It is an aggressive form of cancer and is found in the femur (thigh bone), tibia (shin bone), hip, shoulder and pelvis...


Otosclerosis is hearing loss due to fixation of the stapes bone in the middle ear. Learn more at the New York Head and Neck Institute.


Ovarian cancer is a disease in which malignant cells are found in an ovary. While some cancers are hereditary, meaning someone is more likely to be afflicted if they have a family history with that particular cancer, 90 percent of women with ovarian cancer have no direct hereditary link to the disease...


Northwell Health specialists are experts at minimally invasive and robotic surgery. If your ovarian cysts require surgical treatment, our physicians in the Gynecologic Oncology Center can offer extensive experience and vast resources...