Chapter 43: Common Urinary Complaints

Although these complaints frequently suggest lower urinary tract infection, they may also indicate serious underlying pathology including systemic disease, malignancy, or benign physiological variation. Dysuria, characterized by pain or burning sensation during micturition, most commonly reflects lower urinary tract infection but can also arise from inflammatory conditions such as prostatitis or urethritis. Certain medications including selective serotonin reuptake inhibitors and anticholinergic agents may precipitate dysuria as a side effect. Assessment requires consideration of associated symptoms, gender-specific presentations, and screening for sexually transmitted infections or vaginitis. Hematuria, defined as blood presence in urine either grossly visible or microscopically detectable, demands careful investigation given its association with urological malignancy, particularly in older adults and smokers. Detection involves both dipstick analysis and microscopic confirmation, with clinical correlation guiding further workup including imaging and cystoscopy. The character and timing of hematuria provide diagnostic clues regarding anatomical origin, while additional findings such as red blood cell casts suggest glomerular involvement. Proteinuria indicates protein excretion in urine and typically reflects renal pathology of glomerular origin, though functional proteinuria may occur transiently during acute illness, stress, or intense exercise. Persistent proteinuria warrants investigation for glomerulonephritis or nephrotic syndrome through quantitative assessment via twenty-four-hour urine collection. Special attention to Bence Jones proteinuria is necessary given its association with plasma cell dyscrasias, as standard dipstick methods fail to detect this protein. Urinalysis serves as the foundational diagnostic tool across all three complaints, with interpretation of specific findings such as nitrites, leukocyte esterase, specific gravity, and cellular elements guiding subsequent diagnostic and therapeutic decisions. Management strategies depend on establishing the underlying etiology through systematic clinical assessment, appropriate laboratory confirmation, and imaging studies when indicated.