(HealthDay News) -- Dandruff, medically called seborrheic dermatitis, typically causes flaky skin on the scalp. In infants, it's sometimes called cradle cap.

(HealthDay News) -- Yoga may be a great way to exercise, relax and even relieve pain.

WEDNESDAY, Feb. 23 (HealthDay News) -- A long-standing concern among parents and researchers has been that young people who are exposed to violent video games may become desensitized to violent acts and images, but a new study suggests that may not be the case.

WEDNESDAY, Feb. 23 (HealthDay News) -- New research suggests that diagnosing Alzheimer's disease and other forms of dementia is not always clear-cut, raising the possibility of misdiagnoses among many seniors.

WEDNESDAY, Feb. 23 (HealthDay News) -- When treating children infected with an antibiotic-resistant strain of MRSA (methicillin-resistant Staphylococcus aureus), thoroughly and quickly cleaning the wound is more critical than the kind of antibiotic used, new research suggests.

WEDNESDAY, Feb. 23 (HealthDay News) -- How quickly and smoothly people move on from a lover's quarrel has a lot to do with the relationships each partner had in earliest childhood with the people who raised them, new research reveals.

WEDNESDAY, Feb. 23 (HealthDay News) -- People's emotional response to challenges may affect how their body reacts to stress, according to a new study.

WEDNESDAY, Feb. 23 (HealthDay News) -- Smoking increases the production of mucus associated with chronic bronchitis, a new study shows.

TUESDAY, Feb. 22 (HealthDay News) -- Moderate alcohol consumption may help protect against heart disease, according to two new papers by Canadian researchers.

WEDNESDAY, Feb. 23 (HealthDay News) -- Women, but not men, with post-traumatic stress disorder have high blood levels of a stress-related hormone, new research shows.

WEDNESDAY, Feb. 23 (HealthDay News) -- Researchers say they've developed a new and potentially more accurate way to diagnose melanoma lesions, using laser technology.

WEDNESDAY, Feb. 23 (HealthDay News) -- The main active ingredient in marijuana seems to allow chemotherapy patients to regain their ability to taste and enjoy food, according to the results of a small new study.

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

WEDNESDAY, Feb. 23 (HealthDay News) -- Scientists say they have developed a microchip that can be attached to a smart phone and diagnose cancerous tumors within an hour, from the patient's bedside.

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

WEDNESDAY, Feb. 23 (HealthDay News) -- A major analysis of data on potential triggers for heart attacks finds that many of the substances and activities Americans indulge in every day -- coffee, alcohol, sex, even breathing -- can all help spur an attack.

WEDNESDAY, Feb. 23 (HealthDay News) -- In a European study that echoes the findings of other scientists, researchers have found that children who grow up on farms are less likely to develop childhood asthma.

WEDNESDAY, Feb. 23 (HealthDay News) -- Nearly three years after a nationwide salmonella outbreak that sickened about 1,500 people and claimed two lives, U.S. epidemiologists have learned that speed is of the essence in identifying sources of food contamination and preventing further infection.