Hello and thank you for using HCM. I carefully read you question and I understand your concern.I will try to explain you something. There are different reasons that might cause increased heart beats. Simple physical or emotional stress, caffeine products might cause increased heart frequency so its mandatory to avoid them. All sow, there are different pathology s like anemia, thyroid gland problems like hyperthyroidism that might be the cause of fast heart beats. An active allergy, as you explain might be another cause. When you experience a high frequency, it might be normal to experience palpitation, chest discomfort or difficulties in breathing deeply. This breathing problems might be related to high heart frequency or may be related to allergy that irritate the respiratory system. If these high frequencies are interfering in your normal daily live, If I was your treating doctor I will recommend some simple examinations. I will recommend an electrocardiogram, a cardiac echocardiography and of course a rhythm holter monitoring for 24 h. This is necessary to have a full view of your mean frequencies during day and night. After these, a full blood chek up to exclude anemia or thyroid problems and of course consultation with an allergo-logyst to help you pass the allergy problems. Doing this examinations helps us understand if it is necessary to treat this high frequencies or not. Sometimes, finding the allergy trigger and treating it resolves everything. Hope I was helpful. Wish you good health. Best regards.