Transient insomnia tends to last less than one month and is associated with a change in location or sleeping space.
Short-term insomnia or acute insomnia lasts between one and six months and can often be tied to a life stressor or change in habits.
Chronic insomnia lasts more than six months with at least three nights per week of sleeplessness. This can be hereditary, neurological, or related to some other health disorder. This type of insomnia can have lasting health impacts if it’s not managed.