An Overview of Insomnia
Insomnia is a sleep disorder that is characterized by difficulty falling and/or staying asleep. People with insomnia have one or more of the following symptoms:
Difficulty falling asleep
Waking up often during the night and having trouble going back to sleep
Waking up too early in the morning
Feeling tired upon waking
Types of Insomnia
There are two types of insomnia: primary insomnia and secondary insomnia.
Primary insomnia: Primary insomnia means that a person is having sleep problems that are not directly associated with any other health condition or problem.
Secondary insomnia: Secondary insomnia means that a person is having sleep problems because of something else, such as a health condition (like asthma, depression, arthritis, cancer, or heartburn); pain; medication they are taking; or a substance they are using (like alcohol).