last night my daughter mention there is some marks behind my knee then i saw in mirror it was dark purple veins behind knee,i want to ask what is the reason of purple veins and is it dangerous.my age is 36,I had preclamsia in first pregnancy other two are normal in third pregnancy Ihad heart pulptation ,heart rate was quit high it was 260 hospital had given me treatment in emergency,i was get pregnant in january of this year ,but i had terminate this pregnancy in fouth week after seven week of termination I got period then i started to eat contraception pill levlen ed ihave finished ful one and second one more then half then i wasn,t feeling good then i stopped it during this pill i was feeling high pulptation again.after stopping pill i got period after two days after that now i saw purple veins behind knee of left leg is dark and right leg is little bit light.I saw my GP for heart rate but he had recommend to see cadialogist,iam worried about all this situation,could you help me
Hello, Veins are normally purple and are visible normally in some individuals due to being superficial. So doesn't look like a matter of worry.  For your high heart rate, we need to find out the cause because it can be simple anxiety and can be a cardiac arrhythmia like PSV or atrial fibrillation, in which heart rate suddenly goes up and also suddenly decreases. Blood pressure falls during these episodes and one has dizziness, fainting, blackouts, sometimes syncope. Usually ECG is normal as it is usually done in between the episodes. ECG done during episodes will show abnormality. You will need 24 hour holder monitoring. So visit nearby cardiologist for this investigation. Also, hemoglobin and thyroid test should be done. Ln order to abort such episodes you should try to cough hard. Is there any stress or anxiety associated. Till the time your evaluation is complete, you can ask your local doctor for tab collar LA 20 mg once a day. If none of the above is successful then last option is of electrophysiologist studies which is invasive test which can diagnose and treat the arrhythmia permanently in most of the cases.