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50-year-old man is left unable to urinate after he was bitten by a black widow spider

A 50-year-old man was left unable to urinate after being bitten on the foot by a black widow spider.

The unnamed man, of Ontario, Canada, was bitten on the foot while walking through tall grass near his home, a case report said.

He didn’t think much of it, until he was left so ill he went to hospital with excruciating pain and the inability to urinate.

It is believed to be the first time the symptom has been recorded, according to the medics who published the tale.

The spider’s venom is already known to cause high blood pressure, heavy sweating and muscle pain – all of which the man had.

In Canada, black widow spiders are rare because they live in warmer climates, so it is possible it didn’t occur to the man that it was a deadly spider.

After two hours, he began to feel pain. It gave him a restless night sleep and in the early hours he awoke with agonising abdominal pain.

Doctors at his local emergency department initially thought his abdominal pain was caused by kidney stones and sent him home, Dr Matthew Carere, author of the case report, told Live Science.

The man told doctors about his spider bite, but they thought it was nothing more than a coincidence.

The man returned later that day because his abdominal pain had worsened, so doctors sent him to the larger Ottawa Hospital, for more extensive tests.

By the time he had arrived to the emergency room, where Dr Carere treated him, he was sweating heavily and both of his eyelids were swollen.

His blood pressure was extremely high and a CT scan revealed that his bladder was massively distended, which means it was swollen and giving the sensation of needing the toilet but nothing is released.

When a catheter was inserted, it drained approximately one litre of clear urine, the case reported.

Doctors found no evidence of a bite or rash when they carefully examined his skin.

They suspected the man was bitten by a northern black widow spider, a species found in southern Ontario.

He was treated with various drugs and opioids to control the pain, and by the second day he was able to use the toilet again.

-Dailymail

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