We present the rare case of an impacted urethral calculus in an otherwise previously well 2-year-old boy. His only symptom was episodic severe dysuria and penile pain, a condition we have termed urethralgia fugax.A 2-year-old boy presented as an emergency with a 12-day history of severe episodic penile pain and dysuria, not resolved with simple analgesia. The child had previously attended with similar symptoms on two occasions and was discharged on oral antibiotics for a possible balanitis. The boy had no significant past medical or family history. No previous abdominal pain was described by the parents. The child was voiding into nappies, with pain and associated urinary dribbling only. A small grain of possible stone was noted in a nappy on the day of admission. Examination of the abdomen and external genitalia was unremarkable. Urinalysis revealed non-visible haematuria and was negative for nitrites.