What can cause urinary retention?

Reviewed by Yoshinori Abe, MD

Internal Medicine

Urinary retention is the inability to fully empty the bladder. It can occur suddenly (acute) or develop gradually (chronic), and common causes include urinary blockages, nerve damage, weakened bladder muscles, and side effects from certain medications.

Because urinary retention can signal serious underlying issues—ranging from an enlarged prostate to neurological conditions—identifying the cause early is important. A fast, free symptom check can help you understand what may be behind your symptoms and guide your next steps, whether that's self-care or seeing a doctor. Taking a few minutes now could save you time, worry, and complications later.

Reviewed for medical accuracy: 07/14/2026

Important Next Steps

Learn why urinary retention needs care today Discover likely causes of urinary retention See if urinary retention could be serious Find OTC options for urinary symptoms Find a doctor for urinary retention Discover home remedies for urinary retention Understand if your urinary symptoms need evaluation

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Explanation

Urinary retention is when the bladder can't empty all the way. This can happen for different reasons.

Causes:

Blockages: Things like an enlarged prostate in men, kidney stones, or tumors can block the flow of urine.
Nerve Problems: Sometimes, the nerves that help the bladder work don't send the right signals. This can happen with conditions like diabetes, multiple sclerosis, or after a stroke.
Medications: Some medicines can make it hard to pee. These might include certain allergy, cold medicines, or antidepressants.

Types:

Acute Retention: This happens suddenly and can be very painful.
Chronic Retention: This happens slowly over time and might not hurt, but the bladder doesn't empty fully.

If you're having trouble urinating, it's important to talk to a healthcare provider. You can start by using our free AI-powered symptom checker to help identify what might be causing your symptoms and determine the best next steps for treatment.

(References)

Serlin DC, Heidelbaugh JJ, & Stoffel JT. (2018). Urinary Retention in Adults: Evaluation and Initial .... American family physician, 30277739.
Selius BA, & Subedi R. (2008). Urinary retention in adults: diagnosis and initial management. American family physician, 18350762.
Hernández Hernández D, Tesouro RB, & Castro-Diaz D. (2013). Urinary retention. Urologia, 24419919.

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