TESTICULAR SWELLING (ONE OR BOTH TESTICLES)
WHAT THIS SYMPTOM USUALLY MEANS
Testicular swelling can be caused by infection, trauma, torsion, or tumors—especially dangerous in intact males
MOST COMMON CAUSES
MILD
• Mild trauma
• Insect sting (rare)
MEDICAL
• Orchitis (infection)
• Epididymitis
• Testicular tumor
• Immune-mediated swelling
• Hydrocele
EMERGENCY
• Testicular torsion
• Severe infection with fever
RED FLAGS
• Sudden pain
• Pet cries out when touched
• One testicle enlarging rapidly
• Fever or lethargy
• If unsure, treat as urgent.
AT-HOME CARE
• Prevent licking
• Apply cool compress (if mild discomfort only)
Not a substitute for veterinary evaluation.
WHAT A VETERINARIAN WILL CHECK
• Palpation exam
• Ultrasound
• CBC/chemistry
• Testicular blood flow
• Culture if infection suspected
MOST LIKELY DIAGNOSES
• Orchitis
• Tumor
• Torsion
• Trauma
WHEN TO SCHEDULE A VISIT
Immediately: severe pain or rapid swelling
24 hrs: swelling without pain
LONGEVITY IMPACT
Testicular disease can rapidly escalate and spread; neutering often cures underlying cause.
LONGEVITY CONSULT
Ideal after stabilization, especially with tumor diagnosis.