<s>[INST] Hi I m 24 yrs old female, family history of hypertension, been having episodes of rapid heartbeat,intense pressure on entire upper left hand side of the body, shortness of breath, dizziness and nausea with upper neck pain and pressure on left side of neck with pressure at the bottom of head. been recurring for the last few months but seem to be getting more frequent and intense recently. [/INST] hello,I have gone through your query.Thanks for using HCM.first of all i would like to know your level of Blood pressure at the time of spell of symptoms.Also you must note exact heart rate.You should get an ECG at time of spell of rapid heart rate.If primary heart check up is normal then you should get other investigations related to neck and thoracic out let,My best wishesDr.Rajesh Teli,MD. </s>