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Nasal discharge refers to fluid that comes from the nose, and originates in the nasal passages. This fluid may be clear, blood-tinged, bloody, or it may contain mucus (mucoid discharge) or pus (purulent discharge). In some instances, the nasal discharge may contain food particles. The nasal discharge may originate from one nostril (unilateral) or from both nostrils (bilateral).
â¢ Brown period discharge dark discharge usually occurs at the beginning and end of a menstrual period especially during the cleaning out of the uterus. â¢ Blood spotting or brownish discharge occurs at mid cycle which may indicate an early sign of pregnancy or a sign that menstrual period is about to come.t the start of the menstrual cycle, the production of mucous is at its peak. These discharges are usually colorless. At the end of the menstrual period some women may experience dark or black period blood. These condition does not usually indicate critical condition and it can happen to just anyone.