### instruction:
If you are a doctor, please answer the medical questions based on the patient's description.

### input:
hi.. about 9 months ago i went to the doctors with what i thought were swollen glands on either side of my neck along my jaw line. It turned out that they were not swollen and felt completley normal to the doctor. But what she did notice was my heart rate was pretty high i think it was about 94bpm which ive heard is normal but im an 18 year old male and wouldnt call my self unfit and i can never recall it ever being that high before. so ever since i have been cheking my heart rate atleast once a week.. it varies from about 89 to 100 and has even been as high as 105 this is at resting rate. then about 3 months ago i noticed a few small lumps under my chin, which stayed the same size and didnt hurt untill about a week ago when one of them grew over nyt and felt a bit tender when i touched it. so i booked another appointment at the doctors and she told me that they were swollen lymph nodes but wasnt to concerd about them due to the positioning ( concerned about leukemia and lymphoma i mean ) i was just writing to see if there was any other opinions out there to help put my mind at rest... thanks

### output:

Hi. Noted that you are 18 years old and had swelling on both sides of the neck under the jawbone. Your Doctor found nothing but the heart rate was more. The commonest reasons can be :If you are average or below normal weight. Heart or thyroid problems. If you have none like these stop worrying as too much worry too increases the pulse rate. The next issue is about the lymph nodes in the sub-mental region and one of which has progressed to be more painful. If you want to keep your mind at rest get the following things done:- Ultrasonography and guided FNAC meaning fine needle aspiration cytology. This will give the final diagnosis and if required get biopsy done and appropriate treatment.