Answer: Manic episodes
Step-by-step explanation:
Tina is suffering from manic episodes. This condition cannot be defined as the disorder itself. It can be considered as a condition under bipolar disorder.
It is an emotional state which is characterized by period of at least one week where there is a unusual irritation.
Here, in Tina's condition she is experiencing manic episodes due to which her brain is working in a over active mode and and did not need enough sleep.