Seroma after hair transplant (Photo)

If you are having issues after surgery, especially with redness or pain you should contact your doctor.  In other words, you cannot receive treatment over the Internet.

I would recommend scheduling an in person follow up with the surgeon who did your transplant. From the photos it is hard to tell what you have going on other than some redness and irritation which you should not have at this point, you need to see the doctor to make sure you don't have an infection going on. 

As you are suspecting a problem 15 months after a hair transplant, you should go back to see your doctor and ask about it