What should you know about dehydration and kidney stones?

Kidney stones are solid crystals that form in the urinary system. When there is less water in urine, minerals have less fluid to remain dissolved in. A stone may cause sharp flank or abdominal pain, waves of discomfort, nausea, blood in the urine or painful urination. These symptoms can have other causes, so they do not confirm a stone by themselves.

Drink fluids regularly unless a clinician has told you to restrict them. During hot weather or exercise, replace fluids steadily rather than waiting for intense thirst. Do not force large amounts quickly if you are vomiting or have severe pain. Record pain, urine changes and any fever to share at a GP Consultation. An Abdominal Ultrasound may be used as part of assessment.

Seek urgent care for severe or persistent flank or abdominal pain, fever or chills with urinary symptoms, repeated vomiting, blood in urine, or difficulty passing urine. A blocked urinary system with infection can become serious. Get prompt help if you feel faint, confused or cannot keep fluids down.

Ask whether your symptoms need urine and blood tests, imaging, pain relief or a review of medicines. Discuss your usual fluid intake, previous stones, family history and whether dietary changes are appropriate.