Consumer health basics
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Medication overuse headaches
When medicines that ease headache pain are used too often, they can start causing headaches. Learn about prevention and treatment.
Chronic daily headaches
If you have a headache most days, you might have one of the most disabling headache conditions, chronic daily headaches. Aggressive treatment and long-term management might help.
Egg allergy
Egg allergy can cause a serious reaction in children and adults. Here's how to recognize egg allergy symptoms, and what to do if a severe reaction occurs.
Alpha-gal syndrome
An allergic reaction to meat-based meals had researchers stumped — until they connected the condition to bites from certain ticks.
Peanut allergy
Peanut allergy can be serious. Find out what you need to know to prevent a life-threatening reaction and get the latest on treatment approaches.
Truncus arteriosus
Learn more about this congenital heart defect that makes it difficult for the heart to pump the right amount of blood to the lungs and the body.
Migraine
Find out about painful migraines that can last hours to days. Also can cause nausea and vomiting and reacting to light and sound.
Male infertility
Male infertility often plays a role when couples have trouble conceiving. Find out what causes male infertility and available options for treatment.
High blood pressure (hypertension)
Learn the symptoms and treatment of this condition — which raises the risk of heart attack and stroke — and the lifestyle changes that can lower the risk.