Definition of tush. : a long pointed tooth; especially : a horse's canine.
Common causes of low blood sugar include the following: 1  Overmedication with insulin or antidiabetic pills (for example, sulfonylurea drugs) 2  Use of medications such as beta blockers, pentamidine, and sulfamethoxazole and trimethoprim (Bactrim, Septra) 3  Use of alcohol.  Missed meals.
1 Low blood sugar can be caused by eating less or later than usual, changes in physical activity, or certain diabetes medications. 2  Symptoms that may be caused by low blood sugar include: 3  Nervousness or anxiety.  Shakiness.