'stigma' is a mark that implies humiliation, that disgraces, others, and shames. a disfigurement, a scar, an exile from virtue.

'stigmata' are crucifixion wounds: palms punctured through the middle;  where nine inch nails pinned Christ to the cross.

'stigmata' is the plural form of 'stigma': an essential part in the reproductive structure of a female flower.

In The Idiot, Dostoevsky said:
"Perhaps there is a man to whom the death sentence was read and who was allowed to suffer and then told, ‘Go, You are pardoned.’ Perhaps such a man could tell us something. This was the agony and the horror of which Christ told too [...]"

a metamorphosis implies death as much as it implies rebirth. 
in our chrysalises we are immutably alone. 
 

"[...] But the most terrible agony may not be in the wounds themselves but in knowing for certain that within an hour, then within ten minutes, then within half a minute, now at this very instant – your soul will leave your body and you will no longer be a person, and that is certain; the worst thing is that it is certain."

'stigmata' in estonian means 'without stigma'.