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High hemoglobin count
An above-normal level of hemoglobin in your blood usually occurs when your body needs more oxygen, often because you smoke or live at high altitude.
Dizziness: Symptom
What does it mean if you have bouts of dizziness? Learn about the many possible causes, and when to seek treatment.
Shortness of breath
Problems breathing can come on suddenly or last for weeks or longer. Most cases are due to heart or lung conditions, but there are many other causes.
Fatigue
Many conditions and lifestyle factors can cause this common symptom.
Nosebleeds
Nosebleeds: Symptom — Comprehensive overview covers definition, possible causes of nosebleeds.
Anal pain
Anal pain: Symptom — Overview covers definition, possible causes of this common symptom.
Loss of smell (anosmia)
A stuffy nose is one cause of this symptom. Learn about other causes and when it might be serious.
Night leg cramps
Find out about this common nighttime pain in the calf, foot or thigh and how to ease it.
Testicle pain
If you're experiencing this symptom, an injury or underlying condition may be the culprit.
Knee pain: Symptom
Knee pain: Symptom — Overview covers definition, possible causes of knee joint pain.
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