A South Carolina woman who had been urinating worms for the past three months decided to go to the doctor after it caused too much pain, and in her shock, they found something strange, and now, she has a warning for others.

According to the Daily Mail report, an unidentified 50-year-old woman visited a hospital in South Carolina and complained of worms wriggling in her urine. She also said urination was extremely painful and that she was suffering from pain in her side.

Multiple small, dark larvae were found after the Doctors ran tests, it can be clearly seen by the naked eye. The doctors found an infestation of fly larvae in her bladder, which were then coming out when she passed urine.

Further testing on the larvae revealed that they were not technically worms, but Diptera flies, which are known to cause a condition called myiasis.

According to the National Library of Medicine, a class of Diptera flies that are known to cause a condition called myiasis, which is a term used to describe the parasitic invasion of tissues or organs of vertebrates with the larvae (maggots) of dipterous flies, according to the National Library of Medicine.

Further, Myiasis infestations can occur in the skin, eyes, nasal passages, gastrointestinal passages, and the urinary tract, but urinary myiasis is quite uncommon.

ADG also reported the incident:

Typically, urinary myiasis occurs when an individual drinks water that has been contaminated with the fly eggs. The condition is normally only seen in developing countries or in people whose immune systems have been compromised. In this case, the woman did have diabetes, which may have compromised her immune system. Still, myiasis is extremely rare in the United States.

Although the patient reportedly had no idea how she became infected with fly larvae, she did recently relocate to South Carolina from Mexico, where myiasis is more common. Her case study, which was featured in the journal BMJ Case Reports, gives all new meaning to the age-old advice, “Don’t drink the water in Mexico.”

Doctors in South Carolina had never seen a case of urinary myiasis in an American citizen before, and they had to consult medical literature in order to treat the patient.

After researching, they prescribed her with ivermectin, a drug used to treat parasites. The patient in question reportedly has no idea how she became infected, though she did recently relocate to Charleston, South Carolina, from Mexico, where myiasis is more common.

After one week of treatment, the patient claims that she is now worm-free.

Sources: Taphaps, The Sun, Daily Mail, ADG