Symptoms may include:

• Blurry vision
• Confusion
• Dizziness
• Fainting (syncope)
• Light-headedness
• Sleepiness
• Weakness

The health care provider will examine you and try to determine what is causing the low blood pressure. Your vital signs (temperature, pulse, rate of breathing, blood pressure) will be checked frequently. You may need to stay in the hospital for a while.

The doctor will ask questions, including:

• What is your normal blood pressure?
• What medications do you take?
• Have you been eating and drinking normally?
• Have you had any recent illness, accident, or injury?
• What other symptoms do you have?
• Did you faint or become less alert?
• Do you feel dizzy or light-headed when standing or sitting after lying down?

The following tests may be done:

• Blood cultures to check for infection
• Complete blood count (CBC) and other blood tests, including blood differential
• ECG
• Urinalysis
• X-ray of the abdomen
• X-ray of the chest