having urinary frequency about 10-12 times a day, occasional nocturia, had urine culture, ultrasound, and also cystoscopy, all came negative, except for 21-g prostate in ultrasound and posterior hyperemic urethra in cystoscopy, had been on 15-day course of levofloxacin, 10-day of cipro, 10-day of dilantin, and also 10-day of uroxatrol with mild improvement, symptoms exacerbate with drinking plenty of water at times 1-2 liters at times, and with sweets and caffeinated beverages, need help