Anastasis (from the Greek word for "resurrection") is a term infrequently used in medical circles to describe a recovery or "bounce-back" from a debilitating condition . One case where anastasis is common is catastrophic irradiation of human tissue. Depending upon the level of damage, victims of radiation poisoning can experience an immediate adverse consequence to their exposure, followed by a seemingly full recovery. After a period of time, a secondary set of symptoms, often fatal, will follow.
For example, the immediate symptoms of exposure may include vomiting and tremors, followed by a week or so of seemingly good health. After this grace period, however, the subject will start to experience bleeding of the gastrointestinal tract and hair loss, depending upon the amount of radiation absorbed.