Diseases & Conditions Archive

Thanks to vaccination, the US has been polio-free since 1979, and the spread of this disease has been interrupted in most countries. But worldwide eradication of polio has been elusive, and traces of the virus were recently found in wastewater in London.

There are several types of "sun allergies," including polymorphous light eruption (PMLE), hives, and photoallergic reactions. Learn about these different reactions to sun exposure, as well as prevention and treatment.

Long-established treatments for essential tremor, such as medication and deep brain stimulation surgery, have been joined by a leading-edge technique called focused ultrasound. This incision-free procedure aims sound waves at a spot deep in the brain responsible for tremors. While scientists study ultrasound's long-term effects, the procedure is currently used to treat shakiness on only one side of the body. Other common causes of tremor include Parkinson's disease, caffeine, alcohol withdrawal, anxiety, and fatigue.

A 2022 study found that people who recover from COVID-19 face significantly higher risks of developing type 2 diabetes than those who had short-term upper respiratory tract infections, which are often caused by other viruses.

A 2022 study found that people who have depression after a heart attack are nearly 50% more likely to suffer a stroke compared with heart attack survivors who don't develop depression.

Most people have eye twitches at some point in their lives. These are usually a sign of minor physical or mental stress. Spasms can be calmed with a warm compress, sleep, or exercise. People should see a doctor if one or both eyes close involuntarily with spasms.

Hiccups are sometimes triggered by emotional stress such as surprise, fright, or nervousness. People can try to stop hiccups by holding their breath for five to 10 seconds, breathing into a paper bag, or sipping ice water. Occasionally, hiccups signal other conditions.

About one in 11 men ages 65 and older has atrial fibrillation (afib), a heart rhythm disorder that causes an irregular and often faster-than-normal heartbeat. Afib can be persistent and chronic, or it can happen intermittently. People might have no symptoms with either variety, or afib can cause lightheadedness, shortness of breath, chest pain, or extreme fatigue. But the biggest worry is a fivefold increased risk of stroke. The main treatment choices for people are rate control with medication, or rhythm control, done with medication or a procedure such as electrical cardioversion or catheter ablation.

Brain damage can cause the language disorder aphasia. It affects a person's ability to understand or produce speech. Coping with aphasia requires treatment for the underlying cause and speech therapy to learn how to communicate despite language deficits. If the cause of the aphasia improves, so may the aphasia. But many people will continue to live with some level of aphasia, especially if the cause of brain damage is a progressive disease, such as Alzheimer's.

COVID survivors—even those with mild infections—appear to face a higher risk of cardiovascular problems such as heart failure, heart attack, and stroke for up to one year after their initial infection. People who were hospitalized (especially those who ended up in the intensive care unit) may have the highest risk. The virus that causes COVID can injure blood vessels and triggers an immune response that promotes the formation of blood clots in arteries and veins throughout the body and brain.