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Nocturia is the medical term for frequent nighttime urination. While many people awaken during the night to urinate, those with nocturia experience a frequency of urination that is excessive and may disrupt their sleep cycle. Nocturia becomes more common with age because older people have higher urinary output at night. In addition to aging, nocturia may also be symptomatic of the use of diuretic substances (including caffeine and alcohol), prescription drugs, edema from heart failure, insomnia, pain and prostate or bladder disorders.
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Constipation: Difficult, incomplete, or infrequent evacuation of dry, hardened feces from the bowels.
Diuretic: An agent increasing urine flow, causing the kidneys to excrete more than the usual amount of sodium, potassium and water.
Edema: Abnormal accumulation of fluids within tissues resulting in swelling.
Nocturia: Excessive urine production during the night.
Prostate: The prostate gland in men that surrounds the neck of the bladder and the urethra and produces a secretion that liquefies coagulated semen.