Faint Line on a COVID Test: Does It Count as Positive?
A home COVID test can feel reassuringly simple—swab, swirl, wait—but the moment a faint second line appears, many people freeze. Is it real? Is...
False Negative COVID Test: Why It Happens and What to Do Next
A negative COVID test can feel like permission to move on—go to work, see family, stop worrying. But the virus and the tests do...
Fever Dreams: Why Illness Makes Dreams Intense and How to Sleep Better
When you are sick, sleep is supposed to be restorative—yet it often becomes fragmented, sweaty, and strangely vivid. Fever dreams are one reason. These...
Fire Cider for Colds: What’s in It, Does It Work, and Is It Safe?
Fire cider is a spicy, vinegar-based herbal tonic that many people reach for when a cold is brewing. It is easy to recognize by...
Flu A vs Flu B: Symptoms, Severity, and Treatment Differences
When you hear “the flu,” it can sound like a single illness. In reality, seasonal influenza is mainly caused by two families of viruses:...
Flu Antivirals: Who Should Take Them and How Soon to Start
Flu antivirals can feel confusing: some people are told they “must start within 48 hours,” while others are prescribed treatment later—and many never hear...
Flu Complications: Pneumonia, Dehydration, and When to Worry
Influenza is often described as a “bad cold,” but true flu can be a full-body illness that stresses the lungs, heart, brain, and hydration...
Flu During Pregnancy: Risks, Treatment Options, and When to Seek Care
Getting the flu while you are pregnant can feel different than it did before—more intense fatigue, faster dehydration, and a deeper sense of “I...
Flu Incubation Period: How Soon Symptoms Start After Exposure
After you have been around someone with the flu, the waiting can feel worse than the illness itself. You may replay the moment of...
Flu Shot Effectiveness: Why You Can Still Get Sick and What It Means
A flu shot can feel like a promise: get vaccinated, avoid the flu. In reality, flu vaccination is more like a strong safety feature...
Flu Shot Side Effects: What’s Normal and When to Call a Doctor
A flu shot is a quick appointment that can prevent a long, exhausting illness. Still, it is normal to feel a little “off” afterward—and...
Flu Shot: When to Get It, Who Needs It, and What to Expect
A flu shot is one of the simplest ways to lower your odds of a rough flu season. Even when it does not fully...
Flu Strains for 2025–2026: What’s in the Shot and Why Those Strains Were Chosen
If you have ever looked at the fine print on a flu shot label, the strain names can feel like a foreign language. Yet...
Flu Symptoms Without Fever: Can You Still Have the Flu?
Fever is one of the best-known “flu symptoms,” so it can be unsettling to feel wiped out with body aches, cough, and chills—yet never...
Flu vs Food Poisoning: Vomiting, Fever, and Timing Clues
When nausea hits fast, vomiting starts, and a fever follows, it is natural to wonder what you are dealing with—and what to do next....
FluMist Nasal Spray Vaccine: Who Can Get It and How It Compares
FluMist is a nasal spray flu vaccine that can be a practical alternative for people who want protection without a needle. Instead of a...