Dark urine causes in women: what to know

Deep yellow or amber urine often becomes more concentrated when you lose fluid through sweating, vomiting, diarrhoea, or simply drink less. Some medicines, supplements, and foods can also change urine colour. If blood enters the sample during a period, urine may look darker even when the urinary tract is not bleeding. Brown or tea-coloured urine, especially with yellowing of the eyes or skin, pale stools, nausea, or unusual tiredness, needs medical assessment because liver inflammation can present with dark urine. Burning, frequent urination, lower abdominal discomfort, or fever points toward a urinary problem; flank pain can need prompt review.

Notice whether the colour changes after regular fluid intake and whether it returns during menstruation. Check the label of any new medicine or supplement, but do not stop a prescribed treatment without advice. If the urine remains dark, arrange a clinician visit and mention your cycle, fluid loss, medicines, pain, fever, and any change in bowel movements. A urine test and selected blood tests can help separate concentrated urine from blood, infection, or liver-related causes.

Seek urgent medical help for dark urine with severe side or back pain, fever with shaking, repeated vomiting, confusion, fainting, very little urine, visible blood or clots, or yellow skin or eyes. Prompt assessment is also sensible during pregnancy, after significant fluid loss, or when symptoms are worsening rather than settling.

Ask whether the pattern fits dehydration, menstrual contamination, a urinary condition, or a liver problem; whether you need urine testing; and which warning signs should bring you back sooner.