SYMPTOM
Phantom scratching
Owners may observe phantom scratching in their pet.
Various conditions
This symptom can occur in multiple conditions and warrants further assessment.
Syringomyelia / Chiari-like Malformation
Fluid-filled cavities within the spinal cord disrupt normal sensory processing and can produce a repetitive scratching motion directed toward the neck or shoulder that does not make contact with the skin, often while walking. Cavalier King Charles Spaniels carry a strong breed predisposition linked to their skull conformation, and signs commonly begin in young to middle-aged dogs.
Otitis Externa
Inflammation or infection within the ear canal produces deep, localised irritation that drives scratching directed at the ear and neck region. Because this scratching is usually vigorous and repeatedly makes contact with the skin, it is generally distinguishable from the non-contact 'air' scratching typical of a neurological cause, and head shaking, an odour from the ear or visible discharge usually accompany the pattern.
Atopic Dermatitis
Underlying allergic skin disease can heighten skin sensitivity so that even light stimulation triggers a reflexive scratching motion, and affected dogs typically do make contact with the skin when they scratch, unlike the non-contact 'air' scratching seen with a neurological cause. This tends to be seasonal or progressive, and often affects the face, ears, feet and flanks alongside the neck and shoulders.
Focal Seizure Activity
Partial seizures originating in the brain can produce stereotyped, repetitive motor movements, including scratching-like actions, without full purposeful engagement of the paw against the skin. These episodes tend to be brief and consistent in form each time, and may be accompanied by other subtle signs such as lip-smacking or a glazed expression.
Compulsive Behaviour / Stereotypy
In dogs prone to repetitive behaviours, scratching motions can become a fixed, self-perpetuating pattern similar in nature to tail-chasing, occurring independently of any physical skin or neurological trigger. This is more likely when the behaviour appears during understimulation, confinement or stress, and the dog can often be readily distracted out of it.
Why timing matters
Early observation
Early recognition allows prompt assessment and intervention if needed.
Later presentation
Persistent or worsening signs may indicate progression requiring attention.
The significance of this symptom depends on its context, duration, and associated findings.
Conditions commonly associated
Syringomyelia
A distinctive scratching motion at the air near the ear or shoulder without skin contact, strongly associated with syringomyelia.
Otitis Externa in Dogs
Phantom scratching can appear in dogs with otitis externa, where discomfort or irritation in the ear canal prompts scratching movements that do not make contact with the skin. The behaviour may reflect nerve stimulation or referred sensation from inflammation within the external ear.
Atopic Dermatitis in Dogs
Dogs with atopic dermatitis may display phantom scratching as part of the chronic itch response, where hypersensitivity to environmental allergens can trigger scratching behaviours that may occur even in the absence of direct skin contact. The repetitive nature of the itch-scratch cycle in this condition can reinforce the behaviour pattern.
Compulsive Behaviour in Dogs
Phantom scratching may emerge as a compulsive behaviour in some dogs, where the action becomes detached from its original itch-relief function and is performed repetitively in response to stress, frustration, or underlying neurological factors. In this context, the scratching often occurs without an identifiable physical trigger.
Epilepsy in Dogs
Phantom scratching can appear as a focal motor seizure in dogs with epilepsy, where abnormal electrical activity in a specific region of the brain triggers repetitive scratching movements without conscious intent. This type of seizure activity may occur in isolation or as part of a broader seizure pattern.
Feline Hyperesthesia Syndrome
Scratching motions directed at the air rather than the skin are a distinctive feature of this condition during a flare.
When to explore further
When the symptom is persistent or worsening
When other signs are present alongside
When daily activities or quality of life are affected
When there is uncertainty about the cause
Noting when this symptom occurs, any triggers, and how it changes over time can provide useful information for veterinary discussions.
Last reviewed: 24 April 2026 · Dr Alastair Greenway MRCVS