Before you use this page
FeliVitals is for tracking and organization. It does not diagnose, interpret an individual case, set treatment, or change medication, insulin, fluid, diet, or recheck plans. Use these notes with your veterinarian.
What hyperthyroidism can look like
Feline hyperthyroidism is caused by excess thyroid hormone and is most common in middle-aged and older cats. It can affect metabolism, appetite, weight, heart rate, behavior, digestion, and related kidney values.
Home notes are especially useful because changes can be gradual and may look different from cat to cat.
Signs to record
- Weight loss, especially when appetite is normal or increased.
- Increased hunger, thirst, restlessness, vocalizing, or activity changes.
- Vomiting, diarrhea, poor coat condition, or new litter box changes.
- Medication concerns, missed doses, appetite changes, or new weakness after treatment starts.
What matters to track with hyperthyroidism
- Body weight trends, appetite changes, thirst, vomiting, diarrhea, energy, and behavior.
- Medication timing, missed doses, refill questions, and possible side effects to discuss with the clinic.
- Lab history such as T4 and related kidney values when your veterinarian checks them.
- Blood pressure notes if your veterinarian measures or monitors it.
How FeliVitals helps
- Keep feeding, appetite, weight, hydration, medications, labs, and daily notes together.
- Use charts to see whether weight or appetite is changing over time.
- Prepare a concise care report before thyroid rechecks.
Questions to bring to your vet
- How often should we recheck thyroid values and related kidney values?
- What side effects should I watch for with the current treatment plan?
- Should my cat have blood pressure monitored?
- What changes in appetite, thirst, vomiting, or weight should prompt a call?
Related FeliVitals guides
- Hyperthyroidism daily care guide
- Cat weight tracking guide
- Appetite monitoring guide
- Medication tracking in FeliVitals