(HealthDay News) -- Carelessly handled contact lenses, a low-hanging tree branch or a fingernail used to relieve an itch can scratch the eye's cornea, resulting in what is called a corneal abrasion.

(HealthDay News)-- Becoming drenched with sweat during an intense workout is to be expected. But what if you constantly sweat, even without exertion?

SUNDAY, Feb. 20 (HealthDay News) -- Taking prescription amphetamines may raise your risk of developing Parkinson's disease later, new research suggests.

MONDAY, Feb. 21 (HealthDay News) -- Seniors who are more socially active are less likely to become disabled, researchers say.

MONDAY, Feb. 21 (HealthDay News) -- Early appendectomy is better for children with a perforated appendix than postponing the surgery, a new study finds.

MONDAY, Feb. 21 (HealthDay News) -- Educating kidney transplant patients about their risk for skin cancer helps increase rates of skin self-examination and follow-up with a dermatologist, researchers have found.

MONDAY, Feb. 21 (HealthDay News) -- Children with hearing loss in one or both ears benefit from bone-anchored hearing aids, according to a new study.

MONDAY, Feb. 21 (HealthDay News) -- Children who display a lack of emotion and a lack of empathy or guilt -- features that psychologists call "callous-unemotional traits" -- are at risk of antisocial behavior and other adjustment problems, research shows.

MONDAY, Feb. 21 (HealthDay News) -- Implementing practical, environmentally friendly practices in operating rooms and other hospital facilities could reduce health-care costs without compromising patient safety, says a new study.

MONDAY, Feb. 21 (HealthDay News) -- Prior research has shown that stroke risk peaks in the early morning hours. Now a new study finds that blood clots within stents -- a potential trigger for stroke as well as heart attacks -- also follow a circadian pattern and peak in the early morning.

MONDAY, Feb. 21 (HealthDay News) -- The YouTube videos are disturbing -- images of teens with their arms bleeding and scarred where they sliced into themselves with a razor blade or other sharp object; poetry about pain, loneliness and hopelessness.

MONDAY, Feb. 21 (HealthDay News) -- Hypertension and high cholesterol may be linked to losses in memory and mental abilities in middle age, a new study finds.

SUNDAY, Feb. 20 (HealthDay News) -- Too often surgical breast biopsies, and not less invasive and safer needle biopsies, are being performed on women who have abnormal mammograms, a new study says.

MONDAY, Feb. 21 (HealthDay News) -- A new review of existing research contends that three brief tests could help doctors figure out whether recovering stroke patients are well enough to drive.

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

MONDAY, Feb. 21 (HealthDay News) -- The experience of surviving a melanoma may weigh more heavily on the emotional lives of women than men, a new study suggests.

MONDAY, Feb. 21 (HealthDay News) -- An estimated 21 percent of Americans aged 48 to 59 struggle with some kind of hearing loss, and the number rises to 90 percent of adults 80 and older, a new study says.

MONDAY, Feb. 21 (HealthDay News) -- When it comes to shedding pounds and improving or eliminating type 2 diabetes, gastric bypass surgery may be better than other surgical weight-loss procedures, two new studies find.

MONDAY, Feb. 21 (HealthDay News) -- People with ragweed allergies who live in northern climates aren't imaging that their misery is lasting longer and longer each year.