Colds and flu Archive

A lower-than-usual white blood cell count is often temporary, especially after illness. Find out what your number may mean and when retesting might be needed.

Several factors increase the risk for complications from COVID-19 or influenza and should prompt someone to request an antiviral medication as soon as possible, even if they have been vaccinated or have had the infections before. The risk factors are age (being 65 or older), an impaired immune system, and underlying conditions (especially heart or lung disease). Pregnant women also are at increased risk for severe influenza and COVID, and should consider taking an antiviral.

A positive TB skin test can raise questions about infection, exposure, and what happens next. Find out which follow-up steps may be needed.

A MRSA infection may be treatable, yet the bacteria can sometimes remain on the body and return. Find out what recovery and prevention involve.

In most cases, bee, wasp, or hornet stings can be treated with simple remedies. For example, placing a cold pack on the sting site helps reduce swelling. Applying over-the-counter hydrocortisone cream helps relieve swelling and itching, too. Taking an antihistamine—such as fexofenadine (Allegra) or loratadine (Claritin)—also eases itching. If symptoms persist for a few days, it’s time to call a doctor. If a severe allergic response develops—indicated by difficulty breathing or hives—it’s crucial to call 911 for help and get an injection of epinephrine as soon as possible.

Explore what doctors know about Bell’s palsy triggers, from stress to viral infections and diabetes, and why pinpointing a cause is tricky

Ringworm is a common, contagious skin infection caused by a fungus. Children can get it from other people who have it or from an infected animal. While it can be itchy and unpleasant, ringworm is usually harmless.

Your first workouts when recovering from the flu should be lighter and slower than usual. Your body will let you know when you're ready to ramp back up.

Most people with early-stage Lyme disease symptoms develop a rash, but it often lacks bull’s-eye features—which many people have been told to look for. Other signs of Lyme disease include headache, neck pain, joint aches, and fatigue.

It’s possible for people of any age to contract sexually transmitted infections (STIs). STIs are sometimes symptom-free, making them easy to miss, pass along, and ignore.