TL;DR: Involuntary convulsions and loss of bladder control indicate a generalized seizure, which requires urgent veterinary evaluation, especially if the episode lasts over five minutes.
What does it mean if my dog is having convulsions and losing bladder control?
When a dog experiences involuntary convulsions combined with a loss of bladder control, it is typically a sign of a generalized seizure, also known as a grand mal seizure. During these episodes, abnormal electrical activity in the brain causes the muscles to contract uncontrollably and the body to lose its ability to regulate autonomic functions, such as urination.
Is it a veterinary emergency if my dog has a seizure and loses bladder control?
- Urgency Level: High. Any seizure involving loss of consciousness and bodily functions should be treated as a serious medical event.
- While a single, brief seizure is not always fatal, it is a symptom of an underlying issue that requires immediate professional evaluation.
- If your dog experiences a seizure lasting more than five minutes, or if they have more than one seizure in a 24-hour period, you must transport them to an emergency veterinary hospital immediately to prevent permanent brain damage.
Why should I record a video of my dog's seizure to help with veterinary triage?
- During a stressful event, it can be difficult to accurately describe your dog's movements to a veterinarian.
- If you are able to safely record a video of the episode, it provides the clinical team with vital information regarding the pattern of convulsions and the duration of the event.
- Observing post-seizure behavior helps the vet differentiate between a true seizure and other conditions like fainting or vestibular disease, allowing for a faster and more accurate diagnosis.
Clinical Context (Merck Veterinary Manual)
Neurologic disorders can lead to urinary incontinence and may be characterized as upper motor neuron (UMN) or lower motor neuron (LMN) in origin. UMN signs related to micturition dysfunction typically involve the cerebrum, cerebellum, or brain stem, resulting in a distended bladder that is difficult to express. LMN signs may be due to pelvic nerve damage or detrusor atony, characterized by a distended, easily expressed bladder, and urine leakage. Lesions affecting the S1 to Cd5 spinal segments or the cauda equina can cause an atonic bladder and anus. Functional obstruction (detrusor-sphincter reflex dyssynergia) may also cause inability to urinate due to incoordination of the micturition reflex.
Chapter: Neurology, Urology
Source: The Merck Veterinary Manual, 11th Edition (Page 1524)