Researchers have not yet identified the underlying cause of feline plasmacytic pododermatitis. In some cases, seasonal changes suggest an allergic basis 6.In one study, 50% of cases were found in ...

MY 10-year-old cat has developed soft swollen pads on her feet. Our vet says it is to do with plasma cells and that I should just keep an eye on her as she is an indoor cat. What do you think?

Plasma cell pododermatitis, or "pillow foot," is an uncommon condition that affects the foot pads. Because it's not necessarily painful, your cat may not limp or seem bothered by it.