A recently-published study detailed the bizarre case of an Italian woman who grew eyelash-like hairs inside of her mouth multiple times.
The unnamed woman reportedly visited doctors about her condition over a decade ago, when she was just 19-years-old. She visited doctors and complained of hair growing out of her gums, which had only been documented a handful of times in medical literature. Testing revealed that the young woman also had ovarian cysts, and she was later diagnosed with polycystic ovary syndrome (PCOS), a relatively common hormonal disorder. Women suffering from PCOS tend to produce more testosterone than normal, of which a condition called hiruitism – increased growth of hair on the body – is a known side effect.