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What causes low blood pressure?

ANSWER

The cause of low blood pressure isn't always clear. It may be associated with the following:

  • Pregnancy
  • Hormonal problems such as an underactive thyroid (hypothyroidism), diabetes, or low blood sugar (hypoglycemia)
  • Some over-the-counter medications
  • Some prescription medicines such as for high blood pressure, depression or Parkinson’s disease
  • Heart failure
  • Heart arrhythmias (abnormal heart rhythms)
  • Widening, or dilation, of the blood vessels
  • Heat exhaustion or heat stroke
  • Liver disease

SOURCES:

American Heart Association: "Low Blood Pressure."

Ferri, F. Mosby, 2012. Ferri's Clinical Advisor 2012

FDA: "Midodrine Update: February 8, 2012."

Thaisetthawatkul P. 2004. Neurology

National Heart Lung and Blood Institute: "What Is Hypotension?"

Libby, P and Bonow, R. , Saunders, 2007. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine

Reviewed by Suzanne R. Steinbaum on February 20, 2017

SOURCES:

American Heart Association: "Low Blood Pressure."

Ferri, F. Mosby, 2012. Ferri's Clinical Advisor 2012

FDA: "Midodrine Update: February 8, 2012."

Thaisetthawatkul P. 2004. Neurology

National Heart Lung and Blood Institute: "What Is Hypotension?"

Libby, P and Bonow, R. , Saunders, 2007. Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine

Reviewed by Suzanne R. Steinbaum on February 20, 2017

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What causes sudden drops in blood pressure?

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