Nocturnal Emissions cause Stress/DHT?

I`m going to be 25 in a month. I was a chronic masturbator and used to masturbate every single day for the pleasure feeling and ejaculate once every 2 or 3 days. I know i had wasted terrible amounts of time. But i feel i have also learnt a considerable amount of stuff about the side effects of over masturbation especially after i experienced severe hair loss and blurred vision with lots of other minor complications like severe body aches and also breathing problems. I also suffered from fever in the previous months (june-july) and due to the addiction to the feeling that arose as a result of masturbation, i couldn`t control myself. I read about DHT and stress caused due to over masturbation and hair loss and i also experienced severe hair loss last month and a huge bald spot is showing up in a photo of the top of my head that was never there since just a few months ago!. That gave me a shock and i felt as if i had been simply wasting the important hormones, nutrients and chemicals essential for the body, besides energy and time.

The sad thing was that knowing all this, i couldn`t arrest the habit and it was also severely interrupting my life and almost banning me from finishing my studies. Only after i had a massive hair loss and hair literally spilling over the floor of the house did i realize i was under great stress. So, from the 31st of july, i had abstained from ejaculation, though i did masturbate but never took it as far as ejaculation.

Tonight, after 21-22 days of having not ejaculated, while in sleep, i had a nocturnal emission. I knew this was going to happen. I also tried meditation before going to sleep but it didn`t work. The penis became so soft and the feeling of comfort automatically arose and even though i was sleeping with my penis lying over my body just to protect NE from happening, i couldn`t stop it. Does NE cause Stress and increase in DHT and hence Hair Loss? Also, does just normal erection lead to the 5- alpha reductase reaction that converts Testosterone to DHT(Without masturbation or touching the penis)?