Important note
FeliVitals is for tracking and organization. It does not diagnose hyperthyroidism, interpret an individual cat's lab results, set treatment, recommend medication doses, or replace veterinary care. Use your records to support conversations with your veterinarian.
Who this guide is for
This page is for caregivers whose cat has suspected or diagnosed feline hyperthyroidism and who want a clearer way to keep home observations together. Hyperthyroidism is common in middle-aged and older cats. It can affect appetite, weight, thirst, urination, digestion, behavior, heart rate, blood pressure and kidney-related values.
A tracking app cannot tell you what those changes mean for your cat. It can help you notice what changed, when it changed, and what you want to ask at the next recheck.
What daily care may involve
Veterinary care for hyperthyroidism may include physical exams, thyroid testing, blood chemistry, urinalysis, blood pressure checks and treatment follow-up. Some cats also have other age-related conditions, so the full picture often matters more than one number.
At home, the most useful record is usually simple and consistent. You do not need a perfect diary. You need enough context to answer practical questions: is appetite changing, is weight still dropping, were doses missed, did vomiting start before or after a medication change, and what should be discussed at the next visit?
Symptoms worth recording
These signs do not diagnose hyperthyroidism on their own, but they are useful to record and discuss with your veterinarian:
- weight loss, especially if appetite is normal or increased,
- increased hunger, thirst or urination,
- vomiting, diarrhea or changes in stool,
- restlessness, vocalizing, anxiety or behavior changes,
- poor coat condition, weakness, lethargy or reduced appetite.
What you can track in FeliVitals
- Appetite and food intake: record appetite, meals, food amounts, calories and notes when hunger, refusal, vomiting or eating patterns change.
- Weight: log body weight over time so gradual loss or regain is easier to review.
- Medication routines: store scheduled and as-needed medications, dose logs, times, missed doses and notes for your vet.
- Blood pressure readings: record systolic pressure, optional diastolic pressure, optional pulse, time and notes when your vet asks you to monitor readings.
- Lab results: keep thyroid values such as T4 in context with kidney-related values, electrolytes and other results entered from veterinary lab reports.
- Symptoms and notes: track vomiting, diarrhea, energy, thirst, urination, behavior changes, daily notes and questions before a recheck.
A simple daily workflow
- Log meals and appetite when feeding happens.
- Record medications when they are actually given, including missed or uncertain doses.
- Add weight on the same scale and routine when possible.
- Record symptoms or behavior changes on the day they happen.
- Add blood pressure readings and lab values from veterinary records when available.
- Before the appointment, review trends and export a concise report if you use FeliVitals Pro.
Prepare for your vet visit
For a hyperthyroid cat, a useful visit summary may include:
- recent weight changes and appetite notes,
- current medication list and missed-dose history,
- vomiting, diarrhea, thirst, urination or behavior changes,
- blood pressure readings if your veterinarian requested home records,
- thyroid lab dates and values from your clinic,
- questions about recheck timing, kidney values, side effects and when to call sooner.
If your cat has sudden vision changes, collapse, severe weakness, breathing difficulty, inability to eat, repeated vomiting, or any other urgent change, contact a veterinarian promptly instead of waiting for the next planned review.
Related FeliVitals resources
- Feeding, appetite and calorie tracking
- Lab results tracking
- Medication tracking in FeliVitals
- Blood pressure tracking in FeliVitals
- Cat symptom tracker
- Free cat health tools
- Daily care tips for cats with hyperthyroidism
- How to track cat weight at home
- How to monitor appetite in cats
FAQ
Can FeliVitals diagnose feline hyperthyroidism?
No. FeliVitals only helps you record and organize information. Diagnosis and treatment decisions must come from your veterinarian.
Should I track appetite if my cat is eating a lot?
Yes. Increased appetite can be relevant in hyperthyroid cats, especially when paired with weight loss, thirst, vomiting, diarrhea or behavior changes. The goal is to show the pattern, not to interpret it yourself.
Can I track methimazole or other thyroid medication?
Yes. You can record medication names, schedules, dose logs, times and notes. Do not change the dose, timing or route unless your veterinarian tells you to.
Why include blood pressure and labs?
Veterinary sources note that hyperthyroidism can be connected with blood pressure, heart and kidney concerns. FeliVitals lets you keep those records near the daily care notes your vet may ask about.