Revenue passenger miles. Revenue passenger miles (or RPM) measures demand for air transport. Itâs calculated as the number of revenue passengers multiplied by the total distance traveled. Itâs also called airline âtraffic.â. An increase in RPM is positive for an airline company. It means that more passengers are using their service.
Definition. An armpit lump is a swelling or bump under the arm. A lump in the armpit can have many causes. These include swollen lymph nodes, infections, or cysts.
Overview. Your armpit can be a dark, sweaty place. And itâs ripe for irritation. People may not see a rash in your armpit â thank goodness â but the itch and irritation can be unbearable. Maybe your rash is bumpy and red, or scaly and white. There are many potential causes for underarm rashes, and likewise, many treatments. Determining the cause of the irritation could lead you toward relief.