|
Obesity in Adolescents
Children who are inactive—spending time watching TV or sitting at a computer—are at higher risk for obesity, especially when their diet contains lots of high-calorie foods and beverages.
| |
Obesity Treatment Overview
Whatever treatment plan a person follows, losing weight slowly will be more effective and healthy over the long term.
| |
|
Obsessive-Compulsive Disorder (OCD)
OCD is an anxiety disorder in which a person has an unreasonable thought, fear, or worry that he or she tries to manage through a ritualized activity to reduce the anxiety.
| |
Obsessive-Compulsive Disorder in Children
Rituals and obsessive thoughts are a normal part of a teen's development. An adolescent with OCD has obsessive thoughts that are unwanted and related to fears.
| |
|
OD
This test is done to see how well your baby is developing inside you.
| |
OGTT
This test is used to screen for prediabetes or diabetes. For the test, you drink a sweet beverage and then have your blood drawn several times over the next few hours.
| |
|
Omphalocele
An infant with an omphalocele has a portion of the abdominal organs protruding through an opening in the muscles near the umbilical cord.
| |
Online Resources - Allergy and Asthma
List of online resources to find additional information on allergy and asthma
| |
|
Online Resources - Arthritis and Other Rheumatic Diseases
List of online resources to find additional information on arthritis and other rheumatic diseases
| |
Online Resources - Bone Disorders
List of online resources to find additional information on bone disorders, including bone cancer
| |
|
Online Resources - Breast Health
List of online resources to find additional information on breast health, including breast cancer
| |
Online Resources - Cardiovascular Diseases
List of Internet sites with information about cardiovascular diseases
| |
|
Online Resources - Complementary and Alternative Medicine
List of online resources to find additional information on complementary and alternative medicine
| |
Online Resources - Dermatology
List of online resources to find additional information on dermatology and common skin conditions
| |
|
Online Resources - Diabetes
List of online resources to find additional information on diabetes
| |
Online Resources - Digestive Disorders
List of online resources to find additional information on digestive disorders
| |
|
Online Resources - Endocrinology
List of online resources to find additional information on endocrine disorders
| |
Online Resources - Environmental Medicine
List of online resources to find additional information on environmental medicine
| |
|
Online Resources - Eye Care
List of online resources to find additional information on eye care
| |
Online Resources - Gynecological Health
List of online resources to find additional information on gynecological health
| |
|
Online Resources - Hematology and Blood Disorders
List of online resources to find additional information on blood disorders
| |
Online Resources - Home Health, Hospice, and Elder Care
List of online resources to find additional information on home health, hospice, and elder care
| |
|
Online Resources - Infectious Diseases
List of online resources to find additional information on infectious diseases
| |
Online Resources - Liver, Biliary, and Pancreatic Disorders
List of online resources to find additional information on liver, biliary, and pancreatic disorders
| |
|
Online Resources - Men's Health
List of online resources to find additional information on men's health
| |
Online Resources - Mental Health Disorders
List of online resources to find additional information on mental health
| |
|
Online Resources - Nervous System Disorders
A list of online resources to find additional information on nervous system disorders.
| |
Online Resources - Nontraumatic Emergencies
List of online resources to find additional information on nontraumatic emergencies
| |
|
Online Resources - Oral Health
List of online resources to find additional information on oral and dental healthcare
| |
Online Resources - Orthopedic Surgery
List of online resources to find additional information on orthopedics
| |
|
Online Resources - Otolaryngology
List of online resources to find additional information on ear, nose, and throat disorders
| |
Online Resources - Pathology
List of online resources to find additional information on pathology
| |
|
Online Resources - Pediatrics
List of online resources to find additional information on pediatrics
| |
Online Resources - Physical Medicine and Rehabilitation
List of online resources to find additional information on physical medicine and rehabilitation
| |
|
Online Resources - Plastic Surgery
List of online resources to find additional information on plastic surgery
| |
Online Resources - Prostate Health
List of online resources to find additional information on prostate health
| |
|
Online Resources - Radiology
List of online resources to find additional information on radiology
| |
Online Resources - Respiratory Disorders
List of online resources to find additional information on respiratory disorders
| |
|
Online Resources - Skin Cancer
List of online resources to find additional information on skin cancer
| |
Online Resources - Spine, Shoulder, and Pelvis Disorders
List of online resources to find additional information on spine, shoulder, and pelvis disorders
| |
|
Online Resources - Surgical Care
List of online resources to find additional information on surgery
| |
Online Resources - Travel Medicine
List of online resources to find additional information on travel medicine
| |
|
Online Resources - Urology
List of online resources to find additional information on urology
| |
Online Resources - Women's Health
List of online resources to find additional information on women's health
| |
|
Open Appendectomy
A person's appendix is sugically removed if they develop appendicitis - an inflammation of the appendix caused by infection.
| |
Open Breast Biopsy
A breast biopsy is a procedure in which samples of breast tissue are removed with a special biopsy needle or during surgery to determine if cancer or other abnormal cells are present.
| |
|
Open Cholecystectomy
A cholecystectomy is the surgical removal of the gallbladder and is performed if it develops gallstones, becomes inflamed or infected, or is cancerous.
| |
Open Heart Surgery
Coronary artery bypass surgery is performed to treat a blockage or narrowing of one or more of the coronary arteries, thus restoring the blood supply to the heart muscle.
| |
|
Open Lung Biopsy
A lung biopsy is a procedure in which tissue samples are removed with a special needle to determine if cancer or other abnormal cells are present.
| |
Open Proctectomy
| |
|
Open Skull Base Surgery
Skull base surgery may be done to remove both benign and cancerous growths, and abnormalities on the underside of the brain, the skull base, or the top few vertebrae of the spinal column.
| |
Oppositional Defiant Disorder
This behavior disorder is characterized by uncooperative, defiant, negativistic, irritable, and annoying behaviors toward parents, peers, teachers, and other authority figures.
| |
|
Optional Surgery
Detailed information on the different types of surgery, including surgical diagnosis, optional surgery, elective surgery, required surgery, urgent surgery, or emergency surgery
| |
Oral Cancer and Tobacco
All tobacco products, from cigarettes to snuff, contain toxins, carcinogens, and nicotine, an addictive substance.
| |
|
Oral glucose tolerance test
This test is used to screen for prediabetes or diabetes. For the test, you drink a sweet beverage and then have your blood drawn several times over the next few hours.
| |
Oral Hairy Leukoplakia
Oral hairy leukoplakia causes white lesions, or patches, on your tongue. The Epstein-Barr virus (EBV) can trigger the condition.
| |
|
Oral Health / Dental Specialists
Detailed information on different oral healthcare specialists, including a doctor of dental surgery, doctor of dental medicine, pediatric dentist, endodontist, oral and maxillofacial surgeon, orthodontist, periodontist, and prosthodontist
| |
Oral Herpes
Detailed information on cold sores and herpes simplex virus 1
| |
|
Oral Medications
Many types of diabetes pills are available, and each type has a specific action.
| |
Oriental Massage
Detailed information on massage therapy as a form of alternative therapy
| |
|
Orthodontics/Braces for Children
Orthodontics is the dental specialty that focuses on the development, prevention, and correction of irregularities of the teeth, bite, and jaws.
| |
Orthopaedic Evaluation Procedures
To help the orthopedist determine your treatment, you'll need a physical exam, a medical history profile, and a description of symptoms.
| |
|
Orthopaedics, Diagnosis
A bone marrow biopsy involves removing tissue from the red bone marrow to be sent to the lab for microscopic examination.
| |
Orthopedic Conditions
Detailed information on orthopedic disorders in children, including fractures, sports injuries, overuse injuries, sprains, strains, and heat-related illness
| |
|
Orthopedic Problems
Detailed information on orthopedic problems and teens
| |
Osmolal gap test
This test measures the concentration of particles in your urine. It finds out whether your electrolyte balance is normal and whether your kidneys are working properly.
| |
|
Osmolality (Blood)
This test measures the concentration of dissolved particles, or osmolality, in your blood.
| |
Osmolality (Stool)
This test measures the concentration, or osmolality, of certain particles in a sample of your watery stool. The test is used to find out why you have chronic diarrhea.
| |
|
Osmolality (Urine)
This test measures the concentration of particles in your urine. It finds out whether your electrolyte balance is normal and whether your kidneys are working properly.
| |
Osmolality serum
This test measures the concentration of dissolved particles, or osmolality, in your blood.
| |
|
Osmotic gap
This test measures the concentration of particles in your urine. It finds out whether your electrolyte balance is normal and whether your kidneys are working properly.
| |
Osteoarthritis
Osteoarthritis, the most common form of arthritis, is a chronic, degenerative, joint disease that affects mostly middle-aged and older adults.
| |
|
Osteochondroma
Osteochondroma is an overgrowth of cartilage and bone near the end of the bone near the growth plate.
| |
Osteogenesis Imperfecta
Osteogenesis imperfecta is also known as brittle-bone disease because it is characterized by bones that break easily without a specific cause.
| |
|
Osteomyelitis
Osteomyelitis is an inflammation or swelling of bone tissue that is usually the result of an infection.
| |
Osteomyelitis in Children
Detailed information on osteomyelitis, including symptoms, diagnosis, and treatment
| |
|
Osteoporosis
Osteoporosis causes a loss of bone mass and destruction of bone tissue. The bones most often affected are the hips, spine, and wrists.
| |
Osteosarcoma
Osteosarcoma usually affects the long bones around the knee. It occurs most often in children, adolescents, and young adults.
| |
|
Osteosarcoma
Detailed information on osteosarcoma, including causes, symptoms, diagnosis, and treatment
| |
O'Sullivan test
This blood test checks for diabetes. It is done after you eat a meal, so your doctor can see how your body responds to the sugar and starch in the food.
| |
|
Other Arrangements: Rings and Inversions
Detailed information on other chromosome arrangements, including rings and inversions
| |
Other Bacterial Skin Infections
Detailed information on bacterial skin infections, including erysipelas, erythrasma, impetigo, and paronychia
| |
|
Other Benign Skin Growths
Detailed information on benign skin growths, including dermatofibromas, dermoid cysts, freckles, keloids, keratoacanthomas, lipomas, moles (nevi), and atypical moles (dysplastic nevi)
| |
Other Causes and Risk Factors For Skin Cancer
Detailed information on causes and risk factors for skin cancer, including heredity and environment
| |
|
Other Dermatitis Conditions
Detailed information on the different types of dermatitis, including localized scratch dermatitis, nummular dermatitis, perioral dermatitis, and stasis dermatitis
| |
Other Ear, Nose, and Throat Disorders
Detailed information on ear, nose, and throat disorders, including Bell's palsy, deviated septum, sinusitis, snoring, tonsillitis, and ear infections
| |
|
Other Liver Disorders
Detailed information on autoimmune and metabolic liver disorders, including hemochromatosis (iron overload disease) and Wilson's disease
| |
Other Techniques of Surgery
Detailed information on other techniques of surgery, including laser surgery and electrosurgery
| |
|
Other Treatments for Breast Cancer
Other treatments for breast cancer include hormone therapy, used to prevent the growth, spread, and recurrence of the cancer, adjuvant therapy, and biological therapy.
| |
Other Types of Skin Cancer: Kaposi's Sarcoma
Detailed information on Kaposi's sarcoma
| |
|
Otitis Externa
Detailed information on otitis external (swimmer's ear), including causes, symptoms, diagnosis, treatment, and prevention
| |
Otolaryngology
Otolaryngology is the medical specialty that focuses on medical and surgical treatment for patients who have disorders of the ear, nose, throat, and related structures.
| |
|
Otoplasty
Detailed information on ear pinning surgery, including who might be a candidate for the procedure and possible complications of the procedure
| |
Ova and Parasites (Stool)
This test looks for parasites and their larvae or eggs in a sample of your stool.
| |
|
Ovarian cancer antigen
This test looks for the protein CA 125 in your blood. CA 125 is higher in many women with ovarian cancer.
| |
Ovarian Cancer as Part of Lynch Syndrome
A woman with this type of hereditary colon cancer is at increased risk for ovarian cancer.
| |
|
Ovarian Cancer, Peutz-Jeghers Syndrome
People with this syndrome have dark moles around the mouth, nose, and eyes, as well as multiple polyps in the intestines.
| |
Over-Active Let-Down
Many nursing mothers worry if their babies aren’t getting enough milk—but what if the opposite were true? Here’s what you can do to make sure your aren’t overwhelming your baby during feeding time.
| |
|
Overuse Injuries
Detailed information on overuse injuries in children, including jumper's knee, patellar tendonitis, little leaguers' elbow, little leaguers' shoulder, osteochondritis dissecans, Sever's disease, shin splints, Sinding-Larsen-Johansson disease, spondylolisthesis, and spondylolysis
| |
Overview of Anemia
Anemia is a common blood disorder that occurs when there are fewer red blood cells than normal or there is a low concentration of hemoglobin in the blood.
| |
|
Overview of Cancer
Detailed information on cancer, including primary and metastatic cancers, and benign and malignant tumors
| |
Overview of Clinical Complications of Diabetes
Heart disease, high blood pressure, and kidney disease are some of the complications of diabetes.
| |
|
Overview of Hand Surgery
Many different types of surgeries can be performed on the hand, depending on the underlying cause of the problem.
| |
Overview of Kidney Disorders
Detailed information on kidney conditions, including kidney function, nephrology, kidney problem causes, kidney disease symptoms, and 1 labeled, full-color anatomical illustration
| |
|
Overview of Leukemias
Detailed overview of leukemia, including types, causes, symptoms, diagnosis, and treatment
| |
Overview of Mood Disorders
Mood disorders refer to a category of mental health problems that include all types of depression and bipolar disorder. Mood disorders are sometimes called affective disorders.
| |
|
Overview of Nervous System Disorders
Disorders of the nervous system include stroke, infections such as meningitis, carpal tunnel syndrome, and functional disorders such as headache and epilepsy.
| |
Overview of Nervous System Disorders in Children
The most common symptoms of nervous system disorders in children include delays in developmental milestones, an increase or lack of growth in head size, and a lack of coordination.
| |
|
Overview of Obesity
Obesity is a serious, chronic disease that can inflict substantial harm to a person’s health. Learn about obesity causes and obesity health effects.
| |
Overview of Pacemakers and Cardioverter Defibrillators
An arrhythmia is an abnormal rhythm of the heart that can cause the heart to pump less effectively.
| |
|
Overview of Sleep Problems
Sleep is essential to physical and emotional health. Adequate sleep may also play a role in helping the body recover from illness and injury.
| |
Overview of Sports Injuries
Detailed information on the most common types of soft-tissue injuries
| |
|
Overview of Stroke
Stroke occurs when blood flow to the brain is disrupted. The disruption is caused when either a blood clot or piece of plaque blocks one of the vital blood vessels in the brain or when a blood vessel in the brain bursts.
| |
Overview of the Male Anatomy
The male reproductive anatomy includes the bladder, epididymis, penis, scrotum, and prostate gland.
| |
|
Overview of the Vascular System
Detailed information on vascular conditions, including a description of the vascular system, causes and effects of vascular disease, and a full-color anatomical illustration
| |
Overview of Urogenital Disorders
Detailed information on urology, the branch of medicine concerned with the urinary tract in both genders and the genital tract or reproductive system in the male, and urogenital disorders
| |
|
Oxalate (Urine)
This test checks for the chemical oxalate in your blood. High levels of this substance can make it more likely that you will develop kidney stones.
| |
Oximetry
Oximetry is a procedure used to measure the oxygen level—or oxygen saturation—in the blood.
| |
|
Oxygen Saturation
Oximetry is a procedure used to measure the oxygen level—or oxygen saturation—in the blood.
| |
Oxygen saturation test
An arterial blood gas analysis measures the balance of oxygen and carbon dioxide in your blood to see how well your lungs are working.
| |
]
