It could be cancer, I would get It checked out

i have the same problem on my left testacle and have had it for a year now i would love some replies

The best advice really would be to tell your doctor and/or your parent. I know it's probably not something you'd like to discuss with them, but that's the only way to find out for sure what it is. But don't be too worried, this thing is common. Once I noticed a new mole on my pubis that kind of itched, and it worried me. I made an appointment with a dermatologist, she said it was nothing to worry about, but I had a biopsy done anyway. The results came back confirming what she said, nothing was wrong, but it was a relief for me to be sure anyway.

Just do what you need to do to get an appointment and have it all over quickly. All the best!