Paraneoplastic syndromes in cats are conditions caused indirectly by cancer through hormonal, immune, or metabolic effects, and recognizing them enables earlier cancer diagnosis and better welfare outcomes.
Paraneoplastic syndromes cause significant suffering through their direct effects - severe skin disease, metabolic disturbances, weakness, and pain - while the underlying cancer simultaneously progresses. Cats with paraneoplastic alopecia often present in poor condition with fragile shiny skin and concurrent systemic disease. Recognition of these syndromes as cancer indicators rather than primary dermatological problems can redirect investigation and identify potentially treatable underlying tumors. When tumors are not treatable, recognizing the paraneoplastic nature of signs helps guide welfare-focused palliative and supportive care.