This spot was ringworm, and while using Pittifen spray it near-healed then turned into red dots like in the photo
Expert Answer
From the photo, the cat’s skin looks like allergic inflammation. Ringworm is a fungal skin disease; Pittifen spray’s main ingredient inhibits fungus, bacteria, and mites. However, long-term Pittifen use strongly irritates the skin and can cause allergy and follicle damage.
Stop the spray first, then disinfect with iodine and observe for a few days. If there is no improvement, revisit the vet for a recheck.
My cat's ringworm patch got red and angry after I over-sprayed the same antifungal, turned out the skin was just irritated by the stuff itself. I'd stop the Pittifen, dab iodine, and let it breathe for a few days like the advice says. If it doesn't calm, back to the vet for a recheck, because allergic inflammation needs a different approach than fungus. Long-term strong sprays really do burn feline skin.