Why does the urethra hurt after urinating?

Urination usually refers to the act of passing urine. Typically, the causes of pain in the urethra after urination may include concentrated urine, local trauma, urethral allergy, urethritis, and urethral stones. It is recommended to seek timely medical examination to identify the exact cause and receive standardized treatment under the guidance of a qualified physician. Details are as follows:

1. Concentrated Urine: Concentrated urine is usually caused by insufficient water intake or prolonged urine retention. After urine concentration, chemical components in the urine, such as salts and uric acid, may irritate the mucous membrane of the urethra, thereby causing urethral pain. Drinking an adequate amount of water regularly to dilute the urine may help alleviate this condition.

2. Local Trauma: Local trauma is typically caused by physical factors such as external impact, compression, or scratches. When trauma causes damage to the urethral mucosa, the urine may irritate the injured mucosa during excretion, causing pain. Symptoms such as urethral bleeding, difficulty urinating, and urethral swelling may also occur. Keeping the wound clean and dry can help prevent infection.

3. Urethral Allergy: Urethral allergy may be triggered by factors such as underwear fabric, detergent residue, or condoms, which may cause urethral mucosal congestion, edema, and increased sensitivity. During urination, urine may irritate the damaged mucosa, causing pain. Symptoms such as urethral itching, burning sensation, frequent urination, and urgency may also occur. Medications such as [specific medications not provided in original text] may be used under medical advice to alleviate symptoms.

4. Urethritis: Urethritis refers to an inflammatory reaction of the urethral mucosa, which may be caused by infections such as bacteria, viruses, or mycoplasma. The inflammation may stimulate the nerve endings in the urethra, potentially causing urethral pain. Medications such as azithromycin granules, cefixime granules, and roxithromycin tablets may be used under medical advice for treatment.

5. Urethral Stones: Long-term consumption of foods high in oxalic acid, such as spinach and nuts, may lead to urethral stones. When stones move within the urethra, they may scratch the urethral mucosa, causing pain. Symptoms such as difficulty urinating, hematuria (blood in urine), tenderness along the urethra, and palpable hard nodules may also occur. Nonsteroidal anti-inflammatory drugs (NSAIDs) such as celecoxib capsules, diclofenac sodium sustained-release tablets, and indomethacin capsules may be taken under a doctor's guidance for their anti-inflammatory and analgesic effects.

During treatment, appropriate measures should be taken according to the specific cause to relieve urethral pain and prevent complications. Additionally, attention should be paid to personal hygiene and lifestyle adjustments.