Somagyi vs. Dawn

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Got a big ole endocrine test coming up tomorrow and as I wrap up loking over my notes I found a side on the power point that I must've missed before. When discussing Diabetes Mellitus, my text references two forms of hyperglycemia Dawn's phenomenon and Somagyi effect. To me they seem to be the same thing: early am hyperglycemia. Can anyone explain the difference? THanks.

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this has been discussed before, hope this helps:

https://allnurses.com/forums/f50/somogyi-vs-dawn-phenomenon-276315.html

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Specializes in Critical Care.

Dawn's: increased insulin resistance in AM hours. Affects everybody to some extent.

Somogyi effect: rebound hyperglycemia due to release of glucagon and cortisol to chase nighttime hypoglycemia. Seen in diabetics, mostly.

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They do sound similar, but the treatments are different.

Somagyi- you wanna decrease their insulin to treat it.

Dawn- you want to increase it.

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