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DIABETES: Hypoglycemia Signs and Symptoms

Hypoglycemia is one of the most frequent adverse events experienced by insulin users.

Detailed Information

Hypoglycemia (Low Blood Sugar)

Hypoglycemia Signs and Symptoms

Signs and symptoms of mild-to-moderate hypoglycemia (low blood sugar) may happen suddenly and can include

  • feeling shaky

  • feeling nervous or anxious

  • sweating

  • chills

  • clamminess

  • feeling irritated/impatient

  • confusion

  • fast heartbeat

  • dizziness/lightheadedness

  • hunger

  • nausea (upset stomach)

  • paleness 

  • weakness or having no energy

  • headache, and/or

  • nightmares or crying out during sleep.1

Signs and symptoms of severe hypoglycemia (low blood sugar) may happen suddenly and can include

  • blurred/impaired vision (eye sight)

  • tingling or numbness in the lips, tongue, or cheeks

  • slurred speech

  • clumsiness/coordination problems,

  • sleepiness, and/or

  • seizures.1


1. Hypoglycemia (Low Blood Sugar). American Diabetes Association website. Accessed October 10th, 2019.

Date of Last Review: December 06, 2019

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