(HealthDay News) -- Strep throat is an infection caused by group A Streptococcusbacteria. Unlike a sore throat triggered by the common cold or air pollution, strep throat requires prompt medical treatment.

(HealthDay News) -- Deep pain within the muscles and joints is a common complaint among people with Chronic Fatigue Syndrome.

TUESDAY, Oct. 30 (HealthDay News) -- Children who are homeless or move frequently do worse in certain school subjects than children who have more stable home settings, according to a new study.

TUESDAY, Oct. 30 (HealthDay News) -- Smoking and attention-deficit/hyperactivity disorder (ADHD) share a common genetic risk factor, and childhood ADHD may increase the likelihood of smoking later in life, a new study suggests.

TUESDAY, Oct. 30 (HealthDay News) -- Children whose mothers were overweight and smoked during pregnancy are at increased risk of being overweight, a new study has found.

TUESDAY, Oct. 30 (HealthDay News) -- Teens with smartphones are more likely to have sex and meet others online for sex than teens without Internet access on their phones, according to a new study.

TUESDAY, Oct. 30 (HealthDay News) -- The development of 6-month-old babies who are diagnosed with autism in toddlerhood is very similar to that of children without autism, a new study suggests.

TUESDAY, Oct. 30 (HealthDay News) -- Racial disparities in breast cancer survival persist, even after factors such as education, neighborhood and socioeconomic status are accounted for, new research finds.

TUESDAY, Oct. 30 (HealthDay News) -- The most powerful storm to hit the U.S. Northeast in a generation cut a swath of destruction through the region Monday night and Tuesday morning, leaving at least 33 dead and millions without power as high winds and floodwaters wreaked havoc with electrical systems.

TUESDAY, Oct. 30 (HealthDay News) -- Power outages and flooding caused by "superstorm" Sandy could lead to food safety problems and people need to take steps to ensure that their food supply is accessible and safe, federal government officials advise.

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