The clinical diagnosis of BPH is usually established after completing
the initial evaluation of patients who present with symptoms of prosta
tism. The steps recommended in the initial evaluation include a medica
l history, symptom assessment using a Symptom Score Index, a digital r
ectal examination, a focused neurological examination, urinalysis, mea
surement of serum creatinine, and an optional PSA measurement. Further
examinations such as uroflowmetry and cystoscopy are indicated only i
f the diagnosis is uncertain, or to determine the feasibility of speci
fic invasive therapies.