Conditions that increase water consumption lead to increased frequency of urination so that the cat may not be able to find a convenient litter box in time. (vetmed.tufts.edu)
Any changes in frequency of urination should be checked by your veterinarian immediately. (pethealthnetwork.com)
Symptoms may include painful or difficult urination, increased frequency of urination, inappropriate urination, as well as bloody urination. (blog.petmeds.com)