I often get heart palpitations that come on very sudden and last for only a few seconds. example-skip normal normal skip skip normal skip. feels like extra beats. then hr shoots up and i feel super anxious. no other smptms. does this sound dangerous?

The example of your heart beats with the sensation of extra beats is often related to stress, but it can be a medical problem such as thyroid problems. However, the shooting way up of your heart rate is not normal an should be assessed. Best to book an appointment as soon as possible with a doctor to do an EKG and some blood tests. Then you can find out the cause and treat it. Do not put off.