Diseases & Conditions Archive

Ears can feel clogged due to impacted earwax, swollen or blocked eustachian tubes, or hearing loss. If the sensation persists, a doctor should examine a person's ears and hearing.

Symptoms of food-related illness can show up hours or even days after ingesting a harmful microbe or toxin. Symptoms of food-related illness might include intense nausea, vomiting, stomach cramps, diarrhea, or possibly a low-grade fever (below 101° F). Someone with food-related illness should rest as much as possible, stay hydrated, and avoid sugary drinks or alcohol. A person who develops a high fever, bloody stool, severe abdominal pain, or severe dehydration should go to the emergency room.

People who've never experienced wooziness should call 911 if the symptom comes on suddenly or severely, especially if it's accompanied by other symptoms. However, a person who has experienced wooziness before or been unwell recently should sit down, have a drink of water or juice, and rest for 10 to 15 minutes. If the feeling of wooziness persists, if other symptoms develop, or if it's hard to get up without feeling faint, one should call 911.

Some people who have been infected with the virus that causes COVID-19  have experienced lingering effects like low energy and brain fog. Could gastrointestinal problems be another aftereffect of the virus?

Making one or more trips to the bathroom every night is the defining characteristic of a medical condition called nocturia. It can be caused by aging, lifestyle habits, or underlying conditions such as an overactive bladder or (in men) an enlarged prostate. Treating nocturia starts with lifestyle changes such as avoiding fluids several hours before bedtime, eliminating caffeinated drinks 10 hours before bedtime, and limiting evening alcohol intake. Medications, pelvic floor exercises, injections of botulinum toxin (Botox), or nerve stimulation treatments may also help.

Floaters are shadows that develop in people's field of vision and become more noticeable in certain light. Aging, cataract surgery, and being nearsighted make floaters more likely.

Hives are red, itchy welts that crop up on the skin. Allergic reactions and stress, among other triggers, can cause episodes of hives, which typically last several days to a couple of weeks. Cases that last six weeks or longer may be autoimmune hives.

People who have had shingles have a 30% increased risk for heart disease and stroke, says a new Harvard study. Learn more about the risk.

Melasma, which causes dark patches on the face, is far more prevalent in women than in men. Dubbed the "mask of pregnancy," melasma triggers include not only pregnancy but also hormonal fluctuations, genetics, and sun exposure. People with darker skin are more prone to it. Melasma is typically treated with topical products that lighten the skin or slough off cells. Laser treatments and chemical peels, however, may worsen melasma. Sunscreen use can help prevent flares.

Getting at least one dose of a COVID vaccine lowers the risk of developing long COVID even among people who were previously unvaccinated and recovered from COVID.