Man Found an Odd Mark on His Body. When It Grew, He Went to the Doctor & Got an Unnerving Diagnosis.

Update: Some scientists are skeptical about the explanation some doctors had about what caused this mark.

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An Australian man on vacation received an unnerving diagnosis this week after going to the doctor following the discovery of a strange mark on his stomach.

According to an Australian news outlet, Dylan Thomas woke up to find a bizarre red mark on his stomach. When it grew a few inches, the 21-year-old went to the Bali International Medical Center.

An Australian man said doctors discovered a spider had crawled under his skin through a scar and was living in his body for three days. (Image source: Facebook)

"So according to the doctors over here I've come down with some mystery condition," he wrote on Facebook, attaching a photo of the strange mark. "Tad scary."

Then his condition worsened.

“That’s when it became painful, it was a searing burn,” he told the Australian outlet.

[sharequote align="center"]“That’s when it became painful, it was a searing burn."[/sharequote]

After some investigating, Thomas said the doctors finally solved the mystery: a spider had burrowed itself inside his body through an appendix scar and had been living under his skin for three days.

"Well after running tests and putting things inside my stomach they finally found out it was a tropical spider that's been living inside of me for the last 3 days, managed to get it out luckily," he wrote on Facebook. "Haven't felt so violated in my life before! Just glad it's all over."

An Australian man said doctors discovered a spider had crawled under his skin through a scar and was living in his body for three days. (Image source: Facebook)

Thomas said that doctors removed the spider by making a small incision in his skin and pulling it out.

"[It] was disgusting," he wrote on Facebook.

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