Below, experts share what COVID-related issues should be instant red flags, plus some advice on what to do: According to Dr.

Stage C: Also known as symptomatic heart failure, in which heart impairment causes symptoms, which include fatigue, shortness of breath, and cough. Stage D: Also known as advanced heart failure or ...

A college student gets over the flu, but two weeks later feels winded after climbing stairs and complains of abdominal pain.

Avian influenza A (H5N1) has mutated, so the symptoms of bird flu could change as more people get sick in 2025.

If the cough occurs with other symptoms like fever, shortness of breath, bloody phlegm, or weight loss, they recommend getting evaluated sooner. Lukasz Antoniewicz, a pulmonologist who treats ...

Symptom burden improved significantly more in COVID-vaccinated patients after vaccination than in unvaccinated patients for ...

A persistent cough can be a sign of a more serious illness, which is why it's important to get it checked by a doctor.