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Male infertility
Male infertility often plays a role when couples have trouble conceiving. Find out what causes male infertility and available options for treatment.
Long QT syndrome
Learn more about the causes and treatment of this heart rhythm disorder that can cause fast, chaotic heartbeats.
Insect bites and stings: First aid
How to administer first aid for insect bites or stings.
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.
Herbal supplements and heart medicines may not mix
Some herbal supplements can have dangerous interactions with heart medications.
Food allergy vs. food intolerance: What's the difference?
Might you have to swear off milkshakes for good? Follow the symptom clues to find out whether you possibly have a food allergy or a food intolerance.
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.
Cyclic vomiting syndrome
Cyclic vomiting syndrome often starts in childhood and is marked by spells of vomiting several times an hour over a period of hours or days.
Cold urticaria
Learn more about the symptoms and treatment of this allergic skin reaction caused by cold that most often affects young adults.
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.
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