There are many reasons why diabetic mood swings occur. Changes in diet, medications, low or high blood sugar levels, and the stress of having the disease are all reasons why diabetic mood swings may happen. A diabetic may not even be aware that they are acting out in this manner, and meanwhile their unpredictable behavior is alienating them from family members, friends and close associates.

One of them major symptoms of type 1 diabetes is irritability. The reason for this is because of the imbalance of blood sugar levels, often swinging from high to low. For the most part, however the major culprit is low blood sugar. Children in particular get short tempered. Furthermore, if they have low blood sugar at school they may seem cranky, withdrawn, or may not answer questions correctly because of the subtle confusion brought about by diabetes. UPMC.com provides a good example of this:

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