Dear
Welcome to HCM
We understand your concerns
I went through your details. Please understand
masturbation directly cannot cause health problems,
erectile dysfunction,
memory loss, pimples, lack of concentration and hair loss if you masturbate moderately. In moderation means four or five times a week.
But, if your understanding about masturbation is wrong, or your knowledge about masturbation is poor, then the
anxiety and
stress associated with that wrong knowledge can create apprehension and anxiety, which in turn can cause stress and the it can trigger all the problems you provided. I suggest you to know more positive about masturbation, for which you may consult a counselor.
If you require more of my help in this aspect, please use this URL. http://goo.gl/aYW2pR. Make sure that you include every minute details possible.
Hope this answers your query. Available for further clarifications.
Good luck. Take care.