Answer:
Insomnia.
Explanation:
Insomnia is a persistent disorder that impairs a person's ability to fall asleep or to stay asleep all night long, as is happening to Teresa. People with insomnia usually start the day already feeling tired because besides not getting enough sleep they wake up earlier than expected. These people also have mood problems and lack of energy and have performance at work or in studies impaired because of this disorder. A person's quality of life is often compromised by insomnia.
