A case of a persistent fever in a 12 year old girl who consistently downplayed symptoms of a large labial minora abscess.A 12 year old year presented to our clinic with a 5 day history of fever. She denied all symptoms apart from mild throat pain the previous day. Upon examination no obvious source of fever was found. The next day she reported mild dysuria. Bloods, serology and cultures were ordered. She was advised to start antibiotics for a urinary tract infection if symptoms continued over the weekend. She started the antibiotic treatment. However, the fever persisted despite the treatment and urine cultures subsequently yielded negative results; the antibiotics were stopped. Repeated history taking and examinations revealed no source. Initial serology results returned negative. Eventually, on day 10 the young patient confessed to her mother that she felt something on her vulva. With their consent the patient was examined and a large 3cm by 4cm abscess was found on her left labia minora. It appeared to have spontaneously drained. The next day the fever resolved. The patient was referred to gynaecology. She received the appropriate treatment including antibiotics.This case was increasingly looking to be an FUO case . Steps were taken to investigate the cause methodically. The source was eventually found to be a large labia minora abscess. An uncommon finding in itself, but also it was alarming to us that the child felt unable to report the abscess until day 10, especially given its size.It was a perfect case for how to methodically work through a persistent fever of unknown source. It was also a reminder that paediatric patients may struggle to report certain complaints.The medical profession appreciates that abdominal pain in young boys could mean testicular pain. This case shows that “mild dysuria” or “discomfort” in young girls might be disguising an uncommon vaginal complaint such as an abscess.A broad mindset is always required when approaching a case of suspected FUO. This case proves that a broader once still is required when dealing with pediatric cases.