I feel a lump underneath my skin next to my scar. Do I need to massage? Is this normal?

This is likely a very normal result and you can show your PS at your next visit for final determination. 

The lump you feel is likely scar tissue or suture material.  You can massage the area if it is not painful.  If it is suture material it is easily removed by your surgeon in the office.Contact your surgeon for instruction regarding massaging of the incision site and surgical area.  The amount of massage advised is dependent upon how far out you are from your surgery.

The lump may represent a normal condition after an arm lift (brachioplasty). It could most likely be:1. scar tissue2. suture material under the skinCheck with your surgeon. If it is scar tissue, massage can be helpful.The lump could also represent something more concerning, such as:1. blood clot or collection2. fluidAgain, check with your surgeon. Make sure to describe if it is changing or remaining the same.Best of luck!