The incident occurred around 8.30pm on Magnus Ladulåsgatan on Södermalm.
"She had barely made it out of the door when she collapsed," Viktor Adolphson, field commander with the Södermalm police, told the Metro newspaper.
According to Adolphson, the woman was unconscious for about five minutes and when she awoke, she discovered her wallet was missing.
The brazen nature of the crime and the suspect's apparent willingness to prey on someone in the middle of an epileptic seizure left the seasoned officer shocked.
"It's upsetting. It's so shameless. In this job, you get pretty hardened and all crime is bad, but there are different levels in hell and this is pretty far down," Adolphson said.
Speaking with the Aftonbladet newspaper, he explained that the woman reported having a lot of cash in her wallet at the time.
"She had made a transaction just before," he said.
"This is sort of a low watermark. I've seen a lot of crime in my days, but it never ceases to amaze me how low people can sink."
The woman, who is in her forties, remembers nothing of the incident, nor were there any surveillance cameras in the area, leaving the police with little to go on in terms of a description of the potential suspect.
In writing about the incident on the Södermalm police's official Twitter account, Adolphson didn't hesitate to take one more jab at the heartless perpetrator.
"Woman had an epileptic seizure on the street. Then someone came and stole her wallet. Description: lacking in compassion and morals. Otherwise unknown," the tweet read.
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