China has reported two more H9N2 avian flu infections in humans, both of them patients from Hunan province in the southern ...

Sinusitis can cause facial pressure, sinus headache, and other symptoms. Treatment may depend on the cause. A sinus infection, also known as sinusitis or rhinosinusitis, occurs when your nasal ...

It consists of episodes during which the symptoms last for at least two weeks. Depression can last for several weeks, months, or years. For many people, it is a chronic illness that gets better ...

Pneumonia symptoms can vary based on the cause and severity of the lung infection. For some, it might feel similar to the flu or be barely noticeable. For others, pneumonia can cause severe ...

Sinusitis, or a sinus infection, can cause a stuffy or runny nose, a decreased sense of smell, and other symptoms. You can usually manage the symptoms at home with a decongestant. The sinuses are ...

It is most common in warmer climates and summer months where it can multiply quickly. The symptoms of athlete’s foot may vary slightly from person to person and can look red on lighter skin ...

While we know the hallmark symptoms of COVID ― like coughing, fatigue, for example ― there are some COVID-19 symptoms that aren’t normal and shouldn’t be treated as such. “What’s really important is ...

Here's what to know about flu symptoms in 2025, how to tell if it's something else, and how to protect yourself: But there are some differences. COVID-19 can show up later than the cold or flu ...

Lung diseases are some of the most common medical conditions in the world. Tens of millions of people have lung disease in the U.S. alone. Smoking, infections, and genes cause most lung diseases.