(HealthDay News) -- Tantrums are a common part of toddlerhood, but parents can take steps to head them off.

(HealthDay News) -- Rosacea is a recurring skin condition characterized by red, ruddy skin, especially on the face.

THURSDAY, Sept. 30 (HealthDay News) -- Despite the fact that black Americans are more likely to be wearing a helmet when they get into a motorcycle crash, they are still 1.5 times more likely to die from their injuries than white Americans are, new research reveals.

THURSDAY, Sept. 30 (HealthDay News) -- In an effort to combat the West Nile virus, an international team of scientists has sequenced the genetic code of the mosquito that transmits the illness to humans.

THURSDAY, Sept. 30 (HealthDay News) -- Officials have underestimated the prevalence of gum disease in the United States by as much as 50 percent, new research suggests.

THURSDAY, Sept. 30 (HealthDay News) -- Researchers have created a molecule that can prevent certain cancer genes from getting instructions from their own internal "manual," raising the possibility that treatments could stop cancer at its source.

THURSDAY, Sept. 30 (HealthDay News) -- Nearly 80 percent of men at higher risk for breast cancer aren't aware that males can develop the disease, a new study finds, and none of the men surveyed said their doctors had talked to them about breast cancer.

THURSDAY, Sept. 30 (HealthDay News) -- The cause of male infertility often escapes experts, but scientists have found a genetic mutation that appears to disrupt sperm production.

THURSDAY, Sept. 30 (HealthDay News) -- When it comes to the onset of early Alzheimer's disease, a person's family and close friends are better able to spot the initial signs of trouble than traditional screening by doctors, new research suggests.

THURSDAY, Sept. 30 (HealthDay News) -- The majority of Americans don't know what the life-threatening immune response condition known as sepsis (or septic shock) is, according to a new survey.

THURSDAY, Sept. 30 (HealthDay News) -- Patients battling chronic kidney disease face a higher risk for stroke and heart disease, new research reveals.

WEDNESDAY, Sept. 29 (HealthDay News) -- Many who suffer from attention-deficit hyperactivity disorder (ADHD) appear to have a genetic abnormality that may predispose them to the condition, British researchers report.

WEDNESDAY, Sept. 29 (HealthDay News) -- Another study evaluating the value of mammograms for younger women finds that screening can lower the risk of dying from breast cancer for women in their 40s.

THURSDAY, Sept. 30 (HealthDay News) -- Your dog, like most other animals, can't look in a mirror and figure out the furry thing with eyes is her own reflection. But Wisconsin researchers have just proven that rhesus macaque monkeys can -- and are delighted when they do.

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

THURSDAY, Sept. 30 (HealthDay News) -- Man's best friend protects against eczema in young children, but his nemesis, the cat, does not, new research shows.

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

THURSDAY, Sept. 30 (HealthDay News) -- An estimated 9 percent of adult Americans currently meet the criteria for clinical depression, federal officials reported Thursday.

THURSDAY, Sept. 30 (HealthDay News) -- New research finds that women with ovarian cancer relapse who start chemotherapy as soon as levels of a biomarker for the cancer rise don't live significantly longer than women who wait until symptoms begin to reappear.