Stroke Archive

Ticklishness falls into two categories: gargalesis (which produces laughter and squirming) and knismesis (the sensation of a feather brushing over the skin, also known as light-touch tickling). It is not clear why some people are ticklish, but it may be a bonding or protective reaction.

A troubling aspect of COVID infection is long COVID, also known as post-acute sequelae of SARS-CoV-2 infection, or PASC. PASC is marked by persistent symptoms 30 days or more after a person tests positive for COVID. Also, symptoms suggestive of PASC may emerge many weeks after recovery from the initial infection. Scientists are still learning about PASC, but they have discovered much so far, such as who may be at higher risk, what symptoms are common, how long it may last, and what people can do to protect themselves.

While not as routine as cataract surgery, corneal transplants are becoming more common. A number of things can go wrong with the cornea, especially as people get older, and a partial-thickness or full-thickness transplant can restore vision.

As discussion and debate continues on mass shootings there is increasing evidence that growing up amidst this violence and other extreme stressors affect developing brains and bodies in ways that can be permanent.

Women are more likely to get acne after age 20 than men. Unfortunately, treatment options that worked in the teenage years may not work as well in adult females. The emotional toll of acne may include a higher risk of developing depression, and having severe acne can negatively affect quality of life.

Alzheimer's disease and other forms of dementia are something we think of as diseases of old age. Memory loss is a common symptom, and something that people in midlife also experience — but young onset dementia is very uncommon.

As more US states have legalized recreational cannabis or passed medical cannabis laws, public perception that cannabis is a harmless substance is growing. But its long-term benefits and risks remain unclear, and research has revealed consistently that heavy long-term cannabis use can affect cognition in midlife.

Climate anxiety is distress related to worries about how the effects of climate change. It's more likely to affect adolescents and young adults, leading to chronic stress, depression, anxiety, behavioral problems, and more. What can you do to manage climate anxiety in yourself or a young person in your life?

Migraines can last hours or days and span several distinct phases. A post-headache phase leaves as many as four out of five migraine sufferers feeling like they have a hangover. Experts recommend different approaches to help ward off lingering symptoms depending on their intensity.

A new study suggests a high-fiber diet may protect against dementia. In a group of about 3,700 older adults, those who consumed the most fiber (about 20 grams daily) had the lowest rates of dementia, and those who ate the least fiber (8 grams daily) had the highest rates.