We report here a rare case of adult acute idiopathic scrotal edema (AI
SE). Its characteristics and management are the same for adults as for
prepubertal boys. AISE typically affects prepubertal boys,with an acu
te onset of a relatively painless scrotal erythema and subcutaneous ed
ema, which resolves spontaneously, without sequela, in 1 to 3 days. Th
e erythema and swelling can also extend to the perineum, abdomen, or p
enis. Its diagnosis is primarily made by exclusion. Vital signs, urina
lysis, urine and tissue culture, and white blood cell count are normal
. Palpably normal scrotal contents on physical examination and thicken
ed scrotal wall and normal testis arterial flow on scrotal ultrasound
with color flow Doppler further confirm the diagnosis. Differentiating
AISE from a scrotal Surgical emergency is essential in order to avoid
unnecessary exploration.