FRIDAY, Aug. 27 (HealthDay News) -- Your child takes a hard hit during a football game. Or a nasty fall caused by a failed cheerleading stunt.

FRIDAY, Aug. 27 (HealthDay News) -- Tommy Mallon was hard-charging through his final high school lacrosse game in San Diego, running full-tilt downfield in pursuit of a ball.

FRIDAY, Aug. 27 (HealthDay News) -- While attention-deficit hyperactivity disorder (ADHD) is a real and pervasive condition, new research suggests there is a cluster of kids and adults who successfully fake the condition either to get drugs or gain special privileges in school.

(HealthDay News) -- By the time they reach age 5, nearly all children will have had a rotavirus infection. If severe enough, the infection can lead to severe diarrhea and dehydration.

(HealthDay News) -- Polycystic ovary syndrome (PCOS) is a health condition affecting women that's believed caused by a hormonal imbalance. It's characterized by numerous small cysts that develop in the ovaries, and by missed or irregular menstrual periods.

FRIDAY, Aug. 27 (HealthDay News) -- Alcoholics are unaware of their memory problems and overestimate their memory capacities, a new study finds.

FRIDAY, Aug. 27 (HealthDay News) -- The brain can be a convenient hiding place for HIV, the virus that causes AIDS.

FRIDAY, Aug. 27 (HealthDay News) -- Nutritional supplements are popular among Americans but people need to educate themselves and use caution when using these products to try to reduce their risk of cancer, says a University of Texas expert.

FRIDAY, Aug. 27 (HealthDay News) -- Prescription medicines are the way that many drug addicts first get hooked, making these legal medicines the new "gateway" drugs, new study findings show.

FRIDAY, Aug. 27 (HealthDay News) -- The quality of care a patient receives immediately after orthopedic surgery has a major impact on long-term heart health, a new study shows.

FRIDAY, Aug. 27 (HealthDay News) -- Most older adults with diabetes are sexually active but the disease does cause some problems with intimacy, a new study found.

FRIDAY, Aug. 27 (HealthDay News) -- A new study finds that mothers who don't breast-feed their children are at greater risk of developing type 2 diabetes later in life compared to those who do breast-feed.

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

FRIDAY, Aug. 27 (HealthDay News) -- Although teen smoking rates dropped in the past decade, they have stalled in recent years, which means increased tobacco prevention efforts are needed, a new U.S. government study shows.

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