Blackout

For the Britney Spears album, see Blackout (album). For a lack of electric power, see Power cut.

In medicine, the word blackout is a form of amnesia. The amnesia may be complete or partial. Such an amnesia can be provoked by:

• Stress (biology) for example, before an examination.
• Alcohol: People suffering from such a conditions may also lose consciousness for a certain time.
• Interrupting the supply of oxygen or blood to the brain
• Injuries to the brain
• Various illnesses

After the cause is gone full mental powers are usually restored, although there may be a blank in memory.