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Some insulin side effects are potentially serious and should be reported immediately to your healthcare provider. Some of the warning signs of these serious side effects include:
- Signs of an allergic reaction, such as:
- An unexplained rash
- Hives
- Itching
- Swelling of the mouth or throat
- Wheezing or other difficulty breathing
- Symptoms of diabetic ketoacidosis, caused by prolonged high blood sugar levels (if your dose is too low):
- Fruity, sweet-smelling breath
- Increased thirst and urination
- Nausea and vomiting
- Labored breathing
- Fever
- Confusion
- Unconsciousness
- Symptoms of low blood sugar levels, such as:
- Sweating
- Dizziness
- Changes in behavior, such as irritability or mood swings
- Cold sweats
- Shakiness
- Difficulty speaking
- Loss of coordination
- Extreme hunger
- Blurry vision
- Confusion
- Seizures
- Unconsciousness.
Make sure those around you know how to recognize your particular signs of low blood sugar, as you may be too confused (due to low blood sugar levels) to recognize and adequately respond to low blood sugar. Different people may have different signs of low blood sugar levels.
Written by/reviewed by: Kristi Monson, PharmD; Arthur Schoenstadt, MD
Last reviewed by: Kristi Monson, PharmD