Dawn Phenomenon and the Somogyi Effect
The dawn phenomenon occurs when:
The Somogyi effect can occur when a person takes long-acting insulin for diabetes. If the blood sugar level drops too low in the early morning hours, hormones (such as growth hormone, cortisol, and catecholamines) are released. These help reverse the low blood sugar level but may lead to blood sugar levels that are higher than normal in the morning. An example of the Somogyi effect is:
How can you tell the difference?
The Somogyi effect can occur any time you or your child has extra insulin in the body. To sort out whether an early morning high blood sugar level is caused by the dawn phenomenon or Somogyi effect, check blood sugar levels around 2 a.m. to 3 a.m. for several nights.
eMedicineHealth Medical Reference from Healthwise
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