Kidney Stones Symptoms: 7 Warning Signs

Kidney stones cause severe pain, blood in the urine & nausea. Learn 7 warning signs, UAE risk factors, and how SKHF Fujairah diagnoses and treats kidney stones.

Kidney stone pain hits without warning. One moment you feel fine; the next, a sharp, wave-like pain radiates from your lower back through your abdomen and groin. For many patients in Fujairah and across the UAE’s East Coast, the first attack occurs far from a hospital. Recognising the symptoms of kidney stones early gives you time to act before complications develop.

7 Kidney Stone Symptoms You Should Never Delay Treating

The National Kidney Foundation (NKF) estimates that 1 in 10 people will develop a kidney stone during their lifetime. In hot climates like the UAE, chronic low fluid intake raises recurrence risk, so early assessment is essential; sometimes, the delay, not the stone, causes the harm.

Consider a 42-year-old expatriate in Fujairah who dismissed flank pain as a pulled muscle after exercise. Three days later, he arrived at SKHF A&E with a 5mm ureteral stone causing complete urinary obstruction.

If your pain comes and goes, don’t assume it’s minor. An intermittent, wave-like pain pattern, unlike constant back pain, is a defining feature of a stone moving through the ureter. Seek assessment if you experience:

1. Severe colicky/wave-like kidney stone pain in the back, side, groin, or lower abdomen that fluctuates as the stone moves.
2. Blood in the urine, ranging from faint pink to dark brown-red due to irritation of the urinary tract lining.
3. Nausea and vomiting accompany pain episodes as the body reacts to ureteral obstruction (blockage of the tube carrying urine from the kidney to the bladder)
4. Foul-smelling urine or cloudy urine, which may indicate a secondary bacterial infection.
5. Passing small amounts of urine despite normal fluid intake, suggesting partial blockage of urine flow.
6. Painful or burning urination, which can mimic a urinary tract infection (UTI) but often occurs as a stone approaches the bladder.
7. Fever above 38°C alongside any of the above symptoms, which may indicate an infected obstruction and requires emergency assessment.

Note: Do not wait to pass a kidney stone naturally, and seek assessment within 24 hours.

Types of Kidney Stones: Which One Are You Most Likely to Have?

Many patients assume all types of kidney stones are treated the same, but stone type determines treatment and prevention strategy.

• Calcium stones, especially calcium oxalate and calcium phosphate stones, account for about 80% of cases worldwide and are strongly associated with hydration, dietary factors, and urine chemistry.
• Uric acid stones are more common with high animal-protein diets and low urine pH and may dissolve with urine-alkalinizing therapy and diet modification.
• Struvite stones develop rapidly when urease-producing bacteria (bacteria that make urine alkaline enough for stones to crystallise) cause a urinary tract infection and may require antibiotics plus surgical removal.
• Cystine stones are genetic and need specialist metabolic management.

A typical patient scenario: a 55-year-old diabetic patient presenting with his third uric acid stone in two years. Each time, only symptoms were treated. Metabolic testing (blood and urine tests that identify the chemical cause of your specific stone type) finally revealed elevated urinary uric acid, the intervention point missed in prior visits.

This case shows exactly why stone type, not just pain management, determines the right treatment. Ask your urologist to analyse any stone you pass or have removed. Knowing its composition guides whether you need dietary changes, dissolution therapy, lithotripsy (a technique using laser or sound waves to break stones into smaller fragments), or ureteroscopy (a minimally invasive procedure using a thin camera passed through the urethra).

UAE-Specific Risk Factors: Why Kidney Stones Are More Common on the East Coast

In the UAE, summer heat above 45°C causes sweating and raises the risk of developing kidney stones. One of the main risk factors for kidney stones is not enough fluid intake, meaning you do not drink enough fluids to produce at least 2 litres of urine a day.

The American Journal of Urology reports that outdoor workers in hot climates may experience up to three times the recurrence rate of kidney stones, while the UAE Ministry of Health & Prevention identifies chronic dehydration as a major modifiable risk factor for urological diseases.

Imagine a 38-year-old construction worker in Dibba who drinks only about 1 litre of water during his workday. By mid-summer, his urine output falls below 600 ml daily, far below the 2-litre urine volume recommended by the National Kidney Foundation (NKF) for stone prevention. Within 18 months, he develops a second calcium stone.

Other important risk factors for kidney stones include:

• Outdoor labour or exercise in the UAE summer heat, with the highest-risk window from May to September.
• A high-sodium diet, where excess salt accelerates calcium excretion through the kidneys.
• High animal protein intake, which elevates uric acid levels and promotes uric acid stone formation.
• Family history, because a first-degree relative with kidney stones roughly doubles personal risk (NKF).
• Recurrent urinary tract infections, since untreated UTIs create the conditions for struvite stone formation.
• Vitamin D deficiency, obesity, with new medication for weight loss, and reduced appetite for water intake.

For most UAE residents, drinking water occasionally throughout the day is not enough. Experts recommend consuming 2.5–3 liters of fluid daily and increasing intake to 3.5 liters during periods of outdoor activity.

Pale yellow urine remains one of the simplest indicators of adequate hydration.

When Kidney Stones Move: How to Tell Urgent from Non-Urgent

If you have managed to pass a kidney stone before, you may think you can wait again when stones move, but this is only safe for some small stones.

According to the European Association of Urology (EAU) 2023 guidelines, stones 5 mm or smaller pass on their own in about 68% of cases with hydration and pain relief, while stones larger than 10 mm rarely pass without treatment.

Urgent care is needed if a stone blocks the urinary system and causes fever, because this can lead to urinary tract infections (UTIs).

For example, a 39-year-old patient delayed seeking help for four days because the pain seemed manageable, but later arrived with a blocked ureter and a 39°C fever, requiring IV antibiotics and urgent surgery.

Persistent pain with fever, haematuria, diminished urine output, vomiting means you should go to A&E immediately.

Use the table below to decide whether your kidney stone symptoms need emergency care, a GP visit, or home monitoring.

The Kidney Stone – UTI Connection Most Patients Miss

Many people think a urinary tract infection (UTI) is only an infection, but the problem can be more serious because it may affect the entire urinary system. Urease-producing bacteria, especially Proteus mirabilis, hydrolyse urea to ammonia, raising urine pH above 7.2 and creating the supersaturated milieu where struvite stones crystallise (EAU Urolithiasis Guidelines, 2023). The loop is bidirectional: an obstructing stone causes urinary stasis upstream, ideal for further urinary tract infection development.

Consider a 32-year-old woman who repeatedly treats her UTIs with short antibiotic courses from the pharmacy, unaware that a 1.5 cm struvite stone is developing. Antibiotics clear the infection, but cannot remove the stone. If you have more than two UTIs each year, urological imaging is essential to rule out hidden stone formation.

How SKHF Diagnoses and Treats Kidney Stones in Fujairah

If you have severe kidney stone pain, you may wonder whether you can simply drink more water and pass a kidney stone. This may work for stones measuring 5mm or smaller, but for stones larger than 6mm, spontaneous passage falls below 25%. Waiting with a partially obstructing stone also increases the risk of a urinary tract infection (EAU 2023).

At SKHF, your journey for treating kidney stones follows six simple steps:

1. Present to SKHF Urology: You can attend directly with acute kidney stone symptoms; no GP referral is required.
2. Urine and blood tests: A urine dipstick checks for blood in the urine, while blood tests measure infection and inflammation markers, including WBCs and CRP.
3. Imaging: An ultrasound or low-dose CT-KUB scan identifies the stone’s size, location, and whether it is blocking urine flow.
4. Specialist consultation: Your urologist explains the findings and recommends the most appropriate treatment based on the stone’s size, type, location, and your symptoms.
5. Treatment:
6. Stones 5 mm or smaller are usually managed with Medical Expulsive Therapy (MET), including an alpha-blocker and drinking enough fluids, allowing about 68% to pass naturally.
7. Stones measuring 5 – 10mm are assessed for ESWL or ureteroscopy, depending on the stone’s location and the severity of symptoms.
8. Stones larger than 10mm usually require flexible ureterorenoscopy (FURS) with advanced laser lithotripsy or percutaneous nephrolithotomy (PCNL), depending on the stone size, location, and complexity.
   At SKHF, flexible ureteroscopy is performed using advanced laser machines, and most procedures are completed as day surgery; patients go home the same day.
9. Follow-up: After treatment, metabolic stone analysis identifies the stone composition and helps create a personalised plan to reduce recurrence.

To illustrate how this pathway works in practice, take the example of a 47-year-old Fujairah resident who arrived after passing only small amounts of urine for 36 hours with mild flank pain. CT-KUB revealed a 7mm right ureteral stone with mild hydronephrosis (swelling of the kidney caused by backed-up urine). He underwent same-day ureteroscopy with laser lithotripsy and was discharged the following morning.

Preventing Kidney Stones from Recurring: What the Evidence Shows

One kidney stone raises your lifetime risk of developing kidney stones again to around 50% within five years, unless you act on the specific cause (NKF). Generic advice rarely closes that gap.

The steps that work are tied to your stone type:

• Drink enough fluids: at least 2.5–3 litres daily, rising to 3.5 litres during the UAE summer months. Reaching 2.5 litres of daily urine output cuts recurrence risk by up to 50% (EAU Urolithiasis Guidelines, 2023).
• Reducing dietary sodium to below 5 grams per day lowers urinary calcium excretion, the primary driver in calcium stone formers.
• Limit high-oxalate foods: spinach, almonds, and chocolate if your stones are confirmed as calcium oxalate.
• Limit animal protein to no more than 0.8g per kilogram of body weight if you form uric acid stones.
• Treat urinary tract infections (UTIs) promptly: complete the full antibiotic course. Struvite stones form directly from chronic or undertreated infection.
• Request metabolic stone analysis after your first stone: this is the baseline that makes every other prevention step specific rather than guesswork.

If you’re experiencing kidney stone symptoms, early diagnosis prevents complications and speeds recovery. The urology team at تأسس مستشفى الشيخ خليفة الفجيرة provides same-day diagnostic imaging and minimally invasive treatment; most patients are assessed and treated without an overnight stay.

Medical Disclaimer: This content is for informational purposes only and does not replace professional medical advice. If you are experiencing symptoms, please consult a qualified healthcare provider.