Quick answer: An occasional hairball can be normal, but repeated vomiting, unproductive retching, appetite loss, constipation, abdominal pain, lethargy, weight loss or breathing problems should not be managed as “just hairballs.” These signs can point to obstruction, gastrointestinal disease, skin disease or a respiratory problem.
Red flags that deserve veterinary attention
- Repeated vomiting or retching.
- Trying to vomit but producing nothing.
- Loss of appetite.
- Constipation or trouble passing stool.
- Abdominal pain or bloating.
- Lethargy or weakness.
- Weight loss.
- Persistent coughing or breathing difficulty.
Why coughing can be confused with hairballs
Cornell notes that frequent hacking may sometimes be respiratory disease such as asthma rather than a hairball problem. A video of the episode can help your veterinarian understand what is happening.
Why blockage matters
A large hair mass can occasionally obstruct the gastrointestinal tract. Diagnosis may require examination and imaging, and severe obstruction can require endoscopic or surgical removal.
What to do before the appointment
- Record how often episodes happen.
- Note appetite, stool and water intake.
- Take a video if possible.
- Bring the labels of any hairball products being used.
Related guides
Sources
Written by the PetVibess Editorial Team. General educational information only; not emergency veterinary advice. Updated October 8, 2026.