Teen Losing Hair On Sides and Back of Head

I am a 17-year old boy and have been losing my hair for a year now. Im losing quite a lot of hair on top but thats not the thing, the thing is that im losing some hair on the sides and the back of my head and its really scary. There is no doubt that i have male pattern baldness but im wondering if lets say one becomes a 5 in the norwood class doesnt that person lose some(lose som density) hair on the sides and the back. Is it just the norwood 7 and beyond that lose their hair their there or what? Please answer there is no one that can answer my question!!

With a traditional balding pattern as outlined in the Norwood chart (see below), the sides and back are spared. All thinning is limited to the front, top, and crown in patients with genetic male pattern baldness (MPB). So if you do have thinning hair on the sides or back of your head, I might think about diffuse unpatterned alopecia (DUPA) — but this is all complete guess work without examining you myself. The questions you asked me via email should be asked of your caring doctor in person following an examination of your hair and scalp. I don’t know what you’re seeing, so I can’t provide much more than that.

You need to establish some measurements with mapping your scalp for miniaturization at a minimum in following your hair loss. You also need to have a good doctor establish a Master Plan for your potential progressive balding.