(HealthDay News) -- An abnormality in all or some of your fingernails can signal a potentially serious medical condition.

(HealthDay News) -- Children who get ear infections often end up in a lot of pain and discomfort.

WEDNESDAY, Nov. 23 (HealthDay News) -- Work teams who openly express their negative feelings share more information, have greater solidarity and are better at solving complicated analytical problems, a new study has found.

TUESDAY, Nov. 23 (HealthDay News) -- Black, Asian American and Native American children with neuroblastoma are more likely to die after treatment than white or Hispanic children with this type of cancer, which forms in nerve tissue.

TUESDAY, Nov. 23 (HealthDay News) -- Low-income American families with high-deductible health plans are more likely to delay or forgo medical care due to cost than high-income families with similar coverage, a new study finds.

TUESDAY, Nov. 23 (HealthDay News) -- Exercising to music reduces the risk of falls among elderly people, researchers have found.

TUESDAY, Nov. 23 (HealthDay News) -- Being born just a few weeks early might have a long-term impact on a child's IQ and ability to pay attention, new research suggests.

TUESDAY, Nov. 23 (HealthDay News) -- Implantable devices designed to control heart rhythm and efficiency while preventing sudden death among heart failure patients are as effective at ensuring patient survival in real-world situations as they are in controlled study environments, new research suggests.

TUESDAY, Nov. 23 (HealthDay News) -- There are a number of ways parents can protect their children during flu season, experts say.

TUESDAY, Nov. 23 (HealthDay News) -- With this coming Wednesday the busiest travel day of the year, many Americans will soon be subjected to radiation-emitting body scanners at the nation's airports.

TUESDAY, Nov. 23 (HealthDay News) -- Long-term use of cholesterol-lowering statins does not increase the risk of liver disease in patients with abnormal liver function, and can actually improve liver function, according to a new study that challenges widespread belief.

TUESDAY, Nov. 23 (HealthDay News) -- A less invasive method for finding out whether lung cancer has spread to the lymph nodes could prevent many unnecessary operations, a new study suggests.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay:

TUESDAY, Nov. 23 (HealthDay News) -- A pill a day cut the risk of HIV infection by almost 44 percent in those at highest risk for contracting the virus, namely sexually active gay and bisexual men, a new study finds.

(HealthDay News) -- Here are the latest clinical trials, courtesy of ClinicalConnection.com:

TUESDAY, Nov. 23 (HealthDay News) -- Variety in your workout routine may be key to optimal diabetes management, new research suggests.

TUESDAY, Nov. 23 (HealthDay News) -- Progress has been made, but a number of dangerous or toxic toys are still found on store shelves in the United States, according to the 25th annual Trouble in Toyland report released Tuesday by the U.S. Public Interest Research Group (PIRG).