Can Lexapro (escitalopram) cause hypoglycemia?

Rare, but yes. 0.7% of people on Lexapro (escitalopram) have had hypoglycemia. Many were on Insulin or setoquel. Some were not. 50% had resolution when the drug was stopped, making it likely that these were the ones where Lexapro (escitalopram) was the cause. That would theoretically bring the risk to about 0.35% or 35/10, 000 users. Sorry if it's happening to you. Wish you had won a more profitable lottery.
No. There is no information in the official literature for Lexapro (escitalopram) that hypoglycemia is a side effect.
Check your sugar. If in doubt check your blood sugar levels.