masturbation atypical depression

Hello there! I am 19, male and I have a problem. Lately I have noticed that I easily get depressed. My mood changes in no time, I lose interest in my activities, don’t feel like meeting my friends. But I have noticed that when I start masturbating at this point of mood, after ejaculation the depression goes away. I found it on the internet that there is a type of depression called atypical depression that has the same symptoms like I do. How common is this? Should I do anything about it?

Just like any other, this is a depression as well, which means that there is a chemical procession in the brain involved and should be reported to a specialist at least for observation, and then medication if necessary.