You know, I'm glad you brought this up Rabia, because I've often wanted to
NOT relax my hair by my nape and my hair line so that I can give it a break.
What I mean is, what is wrong with relaxing your nape and/hairline ever
OTHER relaxer treatment instead of EVERY single freaking time you relax your hair? So for instance, if you relax your hair usually every 12 weeks, I don't see anything wrong with relaxing your "sensitive" areas every 24 weeks. I know for me personally, my hair is finer at the nape of my neck (well, the back of the neck I should say) and on my hair line, and I don't feel like it's necessary to relax that area every single time.
I've put this idea to some of my stylists, and they always seem really hesitant. They'll say: "Well, you can relax it like that if you want, but...I don't know...".
OR, they'll say: "But half of your hair will straight and the other part won't be straight/will be underprocessed."
I personally think that stylists are afraid to deviate from the "norm", but there's no RULE that says you HAVE to relax ALL of your hair at the same time, just like there's no rule that says you HAVE relax at [so-and-so] # of weeks either.
I say it's definitely worth looking into Rabia. I bet your hair will thrive in the back. I think your hair will be thicker for it too.