A system for monitoring one or more respiratory conditions is disclosed. The system comprises a medical device and an e-tattoo configured to attach to the subject's skin. The medical device is configured to monitor at least one respiratory parameter of a subject and transmit a signal in response to monitoring a trigger event in the at least one respiratory parameter. The e-tattoo is configured to: receive the signal from the medical device; sense at least one environmental parameter in response to receiving the signal; and transmit the at least one environmental parameter.