My 7y/o female neutered cat has developed a bald patch on her lower stomach that is slightly swollen/bloated and tender to the touch. It's slightly pinkish in colour and sensitive to touch/pressure. She's otherwise eating and drinking normally.
It's possible Chse may have an abscess if the area is swelling and painful on touch. Abscesses, or infections under the skin can happen if she recently got into a fight or had another wound occur. Other possible causes can include growths, skin infections, potential muscular hernias, allergies or even parasite bites. Having it checked out by your vet is best to find the underlying cause and start on treatment. Until you can get to the vet, keeping her from licking or chewing at it with the use of an Elizabethan (cone) collar is best to prevent further irritation.