Regeneration crisis

Regeneration crisis was a possible symptom of regeneration. Metamorphic symbiosis regenerators were used in cases of acute regenerative crisis. 
(TV: Mawdryn Undead'
')
After having some of his regeneration energy siphoned into a newly regenerated future incarnation, who he had learnt had fallen asleep, the Third Doctor suggested that he was suffering from a regeneration crisis. (PROSE: )
Following the Fourth Doctor's regeneration, the Tremas Master made a failed attempt to defeat the Fifth Doctor during his regeneration crisis. (PROSE: , TV: )
Category:Regeneration