Alexandria Nyembwe is a registered nurse and health writer. She has worked in street medicine serving populations experiencing homelessness in Skid Row Los Angeles as well as in cardiovascular care in ...

Steffini Stalos, DO, FCAP, is a pathology and lab medicine physician. She is also the chief medical officer of the lab consultancy firm Blood Associates, LLC. Mean corpuscular hemoglobin concentration ...

Low blood pressure is dangerous when it drops below 90/60 mm Hg and causes symptoms. Signs of dangerous low blood pressure include feeling lightheaded, fainting, and having a fast or slow heartbeat.

Look out for leg pain, swelling, redness, and warmth as signs of a blood clot in the leg. Seek medical help quickly if you have symptoms like sudden shortness of breath or chest pain. A pulmonary ...