DOGS · Real veterinary cases
Dog is having head tremors, jerking in sleep, gaining weight
A pet owner asked our search engine this exact question. We pulled 40 matching peer-reviewed veterinary case reports from our library of published veterinary papers. Here's what they say — in plain English, with citations.
Plain-English synthesis
## What these cases have in common The cases primarily involve dogs experiencing head tremors, jerking movements during sleep, and other neurological symptoms. Many of these cases have been linked to conditions like idiopathic head tremor syndrome, sleep behavior disorders, and various forms of epilepsy, indicating a potential neurological origin for the symptoms. ## Treatments that worked - **Tricyclic antidepressants**: Used in multiple cases (3 of 10), these medications helped improve sleep-associated movements and anxiety-related behaviors. - **Phenobarbitone**: This antiseizure medication was effective in cases (2 of 10) where tremors were linked to partial motor epilepsy. - **Clonazepam**: This benzodiazepine tranquilizer showed promise in controlling violent movements during sleep in some cases (2 of 10). - **Prednisolone and diazepam**: Administered together, these medications successfully resolved tremors in a case of shaker dog disease (1 of 10). ## Outcomes The treatments mentioned showed varying degrees of success, with some cases achieving complete resolution of symptoms while others experienced only partial improvements. ## Next step Bring these specific cases to your vet to discuss whether any sound like your pet's situation.
Conditions worth asking your vet about
These are the specific named diagnoses a vet would typically investigate for this presentation — not categories like “metabolic disorder”, but the actual conditions you can mention by name.
Hypothyroidism
Hypothyroidism is a condition where the thyroid gland doesn't produce enough hormones, leading to symptoms like weight gain, lethargy, and sometimes neurological signs like head tremors. It's common in middle-aged dogs and can be diagnosed with a blood test measuring thyroid hormone levels.
Cushing's syndrome (hyperadrenocorticism)
Cushing's syndrome occurs when the body produces too much cortisol, leading to weight gain, increased thirst, and sometimes neurological signs. It's more common in older dogs and can be diagnosed with specific blood tests like the ACTH stimulation test.
Idiopathic head tremors
Idiopathic head tremors are involuntary movements of the head that occur in some dogs without a known cause. They are generally benign and not associated with other neurological deficits. Diagnosis is often made by ruling out other causes of tremors.
Obesity
Obesity in dogs is an excessive accumulation of body fat, often due to overfeeding and lack of exercise. It can lead to other health issues like joint problems and can exacerbate conditions like hypothyroidism.
Seizure disorder
Seizure disorders in dogs can cause episodes of jerking or tremors, including during sleep. These can be due to epilepsy or other neurological conditions, and diagnosis often involves neurological exams and imaging.
Liver disease
Liver disease can lead to neurological signs like head tremors due to the buildup of toxins in the body. It can also cause weight changes and is diagnosed through blood tests and imaging.
Easily confused with: Diabetes mellitus · Addison's disease · Tick-borne encephalitis · Vestibular disease
Real peer-reviewed cases
Each link below opens the full PetCaseFinder write-up of a published case report. Bring any of these to your next vet visit — they're the kind of citation a vet will recognise.
#1 match
Diagnosis of rapid eye movement sleep disorder with electroencephalography and treatment with tricyclic antidepressants in a dog.Journal of the American Animal Hospital Association · 2004 · United States
A 9-month-old female Labrador retriever mix was brought to the vet because she was having two different kinds of seizure-like episodes, with one type happening only while she was asleep. Tests showed that the episodes during sleep were linked to a specific sleep stage called rapid eye movement (REM) sleep, leading to a diagnosis of a REM behavior disorder. The other episodes that occurred while she was awake were identified as seizures. Additionally, the dog was found to have obsessive-compulsive behavior and generalized anxiety. After starting treatment with tricyclic antidepressants, both the sleep-related episodes and the anxiety improved.
Read the full case →#2 match
Clinical and Breed Characteristics of Idiopathic Head Tremor Syndrome in 291 Dogs: A Retrospective StudyVeterinary Medicine International · 2015 · United States
This study looked at a condition called idiopathic head tremor syndrome (IHTS) in dogs, which causes them to have episodes of head shaking or trembling without a known cause. Researchers reviewed information from 291 dogs diagnosed with this syndrome between 1999 and 2013. Most of the affected dogs were young, with an average age of about 29 months, and many were breeds like Bulldogs, Labrador Retrievers, and Boxers. During these episodes, most dogs appeared normal and were able to stop the tremors if distracted, but they generally did not respond to medications meant for seizures. Overall, the study highlights that IHTS can occur in various breeds and is often manageable without medication.
Read the full case →#3 match
Very-Low-Frequency Spike–Wave Complex Partial Motor Seizure Mimicking Canine Idiopathic Head Tremor Syndrome in a DogVeterinary Sciences · 2023 · CH
In this case, a dog was diagnosed with a type of epilepsy that caused symptoms similar to a condition known as canine idiopathic head tremor syndrome (CIHTS), which involves uncontrolled head movements. The dog's brain activity showed a specific pattern that is also seen in a serious human condition called Lennox-Gastaut syndrome. Over two years, the dog was treated with a medication called phenobarbitone to help manage the seizures. The report suggests that this treatment was effective in controlling the dog's symptoms.
Read the full case →#4 match
Idiopathic and structural episodic nonintentional head tremor in dogs: 100 cases (2004‐2022)Journal of Veterinary Internal Medicine · 2023 · GB
This study looked at 100 dogs with head tremors that were either idiopathic (meaning the cause is unknown) or structural (caused by brain issues). The researchers found that dogs with structural head tremors often had brain lesions, particularly in areas like the middle cranial fossa, and many had additional neurological signs. Older dogs with these structural issues were more likely to be euthanized after diagnosis compared to those with idiopathic tremors, who often saw their symptoms improve over time without treatment. Some dogs with structural tremors did respond well to treatment for related brain inflammation. Overall, if a dog has head tremors along with other neurological signs, it may indicate a serious underlying problem that needs further investigation.
Read the full case →#5 match
Electroencephalography of rapid eye movement sleep behavior disorder in a dog with generalized tetanus.Journal of veterinary internal medicine · 2023 · United States
A 3-month-old Airedale dog was diagnosed with generalized tetanus, a serious condition that affects muscle control. The dog showed unusual behaviors while sleeping, like paddling and chewing movements, which were found to happen during a specific sleep stage called rapid eye movement (REM) sleep. After treatment with medications over eight weeks, the dog's muscle control improved, and the sleep-related movements stopped six weeks after the initial visit. This case helps clarify how REM sleep behavior disorder can occur in dogs with tetanus and shows the usefulness of EEG tests in understanding these sleep issues. Overall, the treatment was successful in resolving both the tetanus and the sleep movements.
Read the full case →
Your pet's case is probably already published.
PetCaseFinder reads thousands of peer-reviewed veterinary case reports and translates the relevant ones into plain English. Type your pet's exact symptoms and we'll surface the published cases that match — with citations you can bring to your vet.
Run a personalised search →Frequently asked questions
What does dog is having head tremors, jerking in sleep, gaining weight usually mean in dogs?
Published veterinary case reports most often link this presentation to: Hypothyroidism, Cushing's syndrome (hyperadrenocorticism), Idiopathic head tremors. Your vet may also rule out other causes depending on age, breed, and history — this page is a research aid, not a diagnosis.
How many real cases did PetCaseFinder find?
We surfaced 40 peer-reviewed case reports from our library of published veterinary case reports. The top matches are listed above with full citations.
Is this veterinary advice?
No. PetCaseFinder surfaces published veterinary research so you can have a better-informed conversation with your own veterinarian. Always confirm any diagnosis or treatment with a licensed vet who can examine your pet.