Call 9-1-1 if you are having trouble breathing or your symptoms last longer than a few minutes.
Some people with cardiomyopathy never have any symptoms. Other people may not have symptoms until the condition gets worse.
Common symptoms include the following:
- Shortness of breath
- Chest pain, especially after physical activity or heavy meals
- Tiredness even after resting
- Dizziness and fainting
- Arrhythmias (irregular heartbeats)
- Heart murmurs (extra or unusual sounds heard during a heartbeat)
Babies and young children may experience vomiting, diarrhea, difficulty eating and breathing, fussiness, and poor growth.