25 years old and aggresive hair loss

[cactopilus]

I started losing my hair since I was 16, I decided to shaved my head when I was 20 because I couldn't hide it anymore and I decided to deal with it. Now I'm 25 year old and I have a big bald area in my top, sides and neck area are also thinning. I think that maybe I'm suffering from DUPA + AGA, a visit to a dermatologist only revealed that I have AGA, no microscopes or seeing the density of my hair.

When I started with this I didn't have money to start a treatment, now I want to do something about my hair loss, I'm realistic and I know that maybe I'm really far gone. I made an online consultation with one of the top surgeons of my country(Spain), he said that I'm not a good candidate for a hair transplant because my donor area is depleted and they can't extract folicular units in order to do a transplant. So it's really frustrating and depressing don't being able to do anything.

I'm thinking about starting medical treatment and having a second opinion. Hair loss is having a great impact in my life and I want to do something about it.

All advice is welcome, also it would like to know your opinion about what type of hair loss I have. My grandfather on my mothers side was the only bald man in the family and he didn't have their sides or neck thinned.

Here are some pics of my current state: http://imgur.com/a/jrvdl