Stretch mark-like red lines on thighs all the way to back of knee? I have some REALLY defined lines that are red (blood related probably) on my thighs (between) and they are also behind my knees. I am the only one in my family, we all have EDS, that has THAT defined of these lines on my legs. It’s kinda crazy, I just looked closely at it today and realized I should probably be sure that it isn’t anything that will affect me (I assume not), but wanna see if anyone else has that? I am only 18 and I have a lot of stretch marks on my thighs and legs. I wonder if this could also have to do with when I used to shave my legs, I stopped doing that because I didn’t enjoy doing it.