May be asymptomatic
Urinary frequency
Nocturia
Difficulty starting urination
Weak stream
Acute urinary retention <unk>  is most common cause)
UTI
Bladder stones
CKD
Benign prostatic hyperplasia
Obstructive causes
Interstitial cystitis
BPH
Acute cystitis
Prostate cancer
Pelvic organ prolapse
Blood clot