SYMPTOM
Recurrent infections
Owners may observe recurrent infections in their pet.
Various conditions
This symptom can occur in multiple conditions and warrants further assessment.
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
Feline Immunodeficiency Virus (FIV)
Increased susceptibility to infections is a hallmark of immunodeficiency when it develops.
Cushings Disease in Dogs
Excess cortisol production in Cushing's disease can suppress normal immune function, rendering dogs more susceptible to bacterial skin infections, urinary tract infections, and other recurring infectious processes. The metabolic and immune changes associated with this hormonal imbalance often mean that infections take longer to resolve and may return after treatment.
Diabetes Mellitus in Dogs
Diabetes mellitus in dogs can impair white blood cell function and alter the tissue environment in ways that favour bacterial growth, particularly in the urinary tract and skin. Recurrent urinary tract infections and skin infections are commonly observed in diabetic dogs, particularly when blood glucose control is suboptimal.
Atopic Dermatitis in Dogs
Atopic dermatitis involves chronic inflammation and disruption of the skin barrier, creating an environment where bacterial and yeast infections can establish more readily. Secondary skin infections in atopic dogs may recur frequently, often coinciding with flare-ups of the underlying allergic condition.
Otitis Externa in Dogs
Otitis externa often involves underlying factors such as allergies, anatomical features, or moisture retention that predispose the ear canal to repeated episodes of bacterial or yeast overgrowth. Dogs with recurrent ear infections may have one or more persistent contributing factors that allow the condition to return despite treatment of individual episodes.
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