Lately, I've been feeling tired and anxious. The heart rate is fast, sometimes slow, irregular, sometimes interrupted, lost rhythm. This symptom often occurs 30 minutes after eating or during intense activity. I feel very worried. When I went to the doctor, the doctor said that I had a neurological disorder, but I was hospitalized and took some medicine to return home. I do not see any specific treatment regimen for definitive treatment. So the doctor asked me to ask if my heart disorder is not completely treated with drugs, what should I do?