1. Tech Knowledge Base
  2. Sensors and transmitters

My sensor is causing pain or discomfort. Is that normal?

It can take a while to get used to a sensor on your arm, but is shouldn’t hurt.

When you apply your first sensor, it may feel uncomfortable but shouldn’t feel painful. If you still feel discomfort a few hours after you’ve applied your sensor, it's probably best to take the sensor off. It’s likely that something’s gone a little wrong while you applied the sensor. Contact the member care team through your app and you’ll get a replacement.

To avoid discomfort during the next sensor application:

Choose the best location for your sensor.

Avoid applying the sensor directly over the muscle, as this can cause pain and discomfort.

The optimal place is the fatty area at the back of your upper arm, between your tricep and deltoid.

If your sensor has caused bleeding:

On occasion, a small amount of blood may appear at the sensor application site. If this happens and your sensor is not causing pain, it's safe to leave it in place. The bleeding should cease within a few minutes.

Skin irritation:

If your get skin gets overly irritated by the sensor or the adhesive of the covering patch, it's best to remove both and refrain from applying a new one until you understand the cause.

To prevent skin irritation:

Prior to applying a new sensor, clean your arm thoroughly and let it dry completely. If necessary, consider trimming any arm hair.

With each new sensor, adjust the location slightly to give the skin from the previous location a chance to recover.

When removing a sensor, you can apply baby oil or vegetable oil for five minutes before removal to help prevent irritation.

If the sensor doesn't cause skin irritation, you can choose not to use the patch. The sensor and transmitter are waterproof and should adhere without the cover. But you’ll need to be careful with it.

For any further medical concerns, talk to your doctor - they’ll be familiar with this kind of device and effects related to them.