Myositis is a group of conditions that cause muscle inflammation and weakness. Viral myositis occurs as a complication of a viral infection, such as influenza viruses or enteroviruses. Viral myositis, ...

You wake up with a scratchy throat and that vague feeling of unwellness. Is it just allergies? The start of a cold? Or something that might need antibiotics? Knowing the difference between viral and ...

Viral skin rashes (also known as viral exanthems) can cause itching, irritation, and pain — and possibly symptoms like fever or fatigue. Unlike allergic rashes, which happen when your immune system ...

Flu, viral fever, and COVID-19 all cause fever and respiratory symptoms, but key differences in onset, symptom patterns, ...

CDC has issued travel health notices for four countries contending with chikungunya outbreaks in recent months. What to know ...

Sinus infections, also known as sinusitis, can leave us feeling miserable with symptoms like nasal congestion, facial pain ...

Early-life viral infection programs immune cells to hijack allergy-associated maternal antibodies, driving allergy risk later in life.

A newly identified virus–cell hybrid structure allows viruses to spread faster and more aggressively by hitching a ride on ...

Most experts would treat you for one to two weeks, then taper the medicine off over a few weeks. The side effects of this dose of steroids are modest if it does not need to be frequently repeated.