Common conditions, overlapping signs
Water, weight and the litter box
Cornell and the AAHA/AAFP guidelines both list increased thirst or urination and weight changes among reasons for assessment. Note whether bowls empty faster, clumps change or clothes fit differently around the cat when you hold them. Do not restrict water or choose a disease diet from symptoms alone.
Movement and mouth comfort
Less jumping may reflect pain rather than laziness. Dropped food, reluctance to chew or a change in grooming can also matter. Provide easier access while arranging a visit; home adjustments do not replace pain assessment. Never give human pain medicine without a vet's direction.
Night calling and confusion
Cornell's cognitive dysfunction guidance explains that nighttime vocalizing and disorientation can have other medical causes. Do not diagnose dementia from a video or a list. Tell the clinic about onset, timing, sleep changes and any changes in vision or litter habits.