The doctor will look at the lump closely and check whether it moves under the skin, which helps tell a cyst apart from other kinds of swelling.
Treatment usually means numbing the area, making a small opening, draining what is inside and removing the sac wall so it does not come back.
After the procedure the shoulder is covered with a clean dressing. Resting the arm for a day or two and keeping the wound clean helps it heal well.
Keeping bag straps clean, washing the shoulders after sweating and leaving bumps alone instead of squeezing them all help prevent new cysts.
Carry on and do not let it wait too long. The videos below show shoulder cysts being treated by professionals.
