Trusted Health Articles
Medically reviewed guides on symptoms, conditions, tests, treatments, and procedures — written for real patients.
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- Reviewed by our medical editorial team
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Insomnia: Symptoms, Causes, and Treatment (CBT-I and More)
Insomnia is the most common sleep complaint, and while an occasional bad night is normal, persistent difficulty sleeping is a treatable condition, not something to just live with.
Diarrhea
Diarrhea is almost always the body dealing with a temporary irritant or infection — here's what typically causes it, how to treat it at home, and when it points to something that needs attention.
Food Poisoning
Food poisoning usually strikes within hours of eating contaminated food and clears up on its own within a few days — here's how to spot it, treat it, and know when it's more serious.
Gastroenteritis
Often called the 'stomach flu,' gastroenteritis is usually viral, highly contagious, and resolves on its own — the main risk to manage is dehydration, not the infection itself.
COVID-19
COVID-19 today looks different than it did in 2020 — for most vaccinated, healthy people it's a manageable illness, but knowing current symptoms, contagious periods, and risk factors still matters.
RSV (Respiratory Syncytial Virus)
RSV causes mild cold-like symptoms in most people but can be genuinely serious for infants and older adults — here's how to recognize the difference.
Pneumonia
Pneumonia can range from a manageable illness treated at home to a genuine medical emergency, especially for young children, older adults, and people with weakened immune systems.
Bronchitis
A lingering cough after a cold is often acute bronchitis — usually viral, not needing antibiotics, but sometimes confused with pneumonia when symptoms are severe.
Ear Infection
Ear infections are especially common in young children and usually improve within a few days — here's what causes them and when antibiotics or a doctor's visit are actually needed.
Sinusitis
Facial pressure, thick nasal discharge, and a cold that won't quit are the hallmarks of sinusitis — here's how to tell it apart from a lingering cold and what actually helps.
Tonsillitis
Tonsillitis causes a sore throat plus visibly swollen, often white-coated tonsils — usually viral, but frequent recurrence can raise the question of removing the tonsils altogether.
Sore Throat
Most sore throats are caused by common viruses and clear up on their own — here's how to tell a viral sore throat from one that needs a doctor's visit, and whether it's contagious.
Common Cold
The common cold is the most frequent human illness, usually mild and self-limited — here's what to expect, how to feel better faster, and when it might be something more.
Influenza (Flu)
The flu comes on faster and hits harder than a common cold, and can be genuinely dangerous for some groups — here's how to recognize it, treat it, and know when it needs medical attention.