Nonmelanoma skin cancer is a type of skin cancer that is not melanoma. It is the most common type of skin cancer, accounting for approximately 90% of all skin cancer cases. There are several types of nonmelanoma skin cancer, with the most common being basal cell carcinoma and squamous cell carcinoma.
Noonan syndrome is a rare genetic disorder that affects the development of various parts of the body. It is characterized by unusual facial features, short stature, heart problems, and other physical abnormalities. The condition also affects a person's developmental pace, causing delays in walking, talking, and learning new skills.
Norovirus infection is a highly contagious and common cause of vomiting and diarrhea. It is a viral infection that affects millions of people worldwide each year. Norovirus infections can cause severe symptoms, including vomiting and diarrhea, that can lead to dehydration and even death in severe cases.
Obesity is a complex disease that involves having too much body fat. It is a medical problem that can lead to a range of serious health consequences. According to the World Health Organization (WHO), more than 1.9 billion adults worldwide were overweight in 2016, and over 650 million adults were obese. Obesity is not just a cosmetic concern; it is a serious health issue that requires attention and treatment.
Obsessive-compulsive disorder (OCD) is a mental health condition characterized by recurring and persistent thoughts, urges, or images that are experienced as intrusive and disturbing. These unwanted thoughts and fears are known as obsessions, and they can lead to repetitive behaviors or compulsions. OCD is a complex condition that can significantly impact an individual's daily life, relationships, and overall well-being.
Obstructive sleep apnea (OSA) is a common sleep disorder that affects millions of people worldwide. It is characterized by repeated episodes of shallow or interrupted breathing during sleep, which can lead to significant disruptions in sleep quality and overall health.
Occupational asthma is a type of asthma that develops as a result of exposure to substances in the workplace. It is also known as work-related asthma. This condition occurs when an individual breathes in fumes, gases, dust, or other substances that trigger an immune system response, leading to changes in how the lungs work. Occupational asthma can be a serious and potentially debilitating condition that affects an individual's ability to work and participate in daily activities.
Ocular rosacea, also known as roe-ZAY-she-uh, is a chronic inflammatory condition that affects the eyes. It is often associated with rosacea, a chronic skin condition that affects the face. Ocular rosacea is characterized by redness, burning, and itching of the eyes, which can be debilitating and impact daily life. In this article, we will delve into the types, causes, risk factors, symptoms, prevention, complications, diagnosis, treatment, and management of ocular rosacea.
Oligodendroglioma is a rare and complex brain tumor that originates from the oligodendrocytes, cells that produce myelin, a fatty substance that protects nerve cells and facilitates the transmission of electrical signals in the brain and spinal cord. This type of tumor is most common in adults, but it can occur at any age. In this article, we will delve into the different types of oligodendroglioma, its causes, risk factors, symptoms, prevention strategies, complications, diagnosis and evaluation methods, treatment options, and management techniques.
Oppositional Defiant Disorder (ODD) is a mental health condition characterized by a frequent and ongoing pattern of anger, irritability, arguing, and defiance towards authority figures, such as parents and teachers. ODD also includes a behavior called vindictiveness, which is characterized by being spiteful and seeking revenge. This condition can cause significant problems in family life, social activities, school, and work. As a parent, it can be overwhelming to manage a child with ODD, but with the help of healthcare professionals, you can get the support you need.
Optic neuritis is a condition that occurs when the optic nerve, which is responsible for transmitting visual information from the eye to the brain, becomes inflamed. This inflammation can cause damage to the optic nerve, leading to a range of symptoms including pain with eye movement, temporary vision loss in one eye, and even permanent vision loss if left untreated.
Oral thrush, also known as oral candidiasis, is a common condition in which the fungus Candida albicans accumulates on the lining of the mouth. While Candida is a normal organism in the mouth, it can overgrow and cause symptoms, leading to a range of uncomfortable and potentially painful symptoms.
Orthostatic hypotension, also known as postural hypotension, is a type of low blood pressure that occurs when standing up after sitting or lying down. This condition is characterized by a sudden drop in blood pressure, which can lead to dizziness, lightheadedness, and potentially fainting. Orthostatic hypotension can be mild and temporary, but it can also be a sign of more serious underlying medical conditions.
Osteoarthritis (OA) is the most common form of arthritis, affecting millions of people worldwide. It is a degenerative joint disease characterized by the breakdown of the cartilage that cushions the ends of the bones, leading to joint pain and stiffness. OA can affect any joint in the body, but it most commonly affects the joints in the hands, knees, hips, and spine.