I don't think they have any other function besides looks.
[Since, according to Lucy, the source of a Diclonius' powers is the pineal gland, not the horns.]
I'm pretty sure they do come out of my skull, and no, I've never had trouble with them getting caught on things. Although, in the world I was taken to before this one, everyone who got pulled in obtained animal features during certain moon cycles. I got deer features, so my horns would grow into antlers and then I'd have them get caught on things. I even had spots across my face and a deer's tail to match.
Apologies for the wait! on hiatus this month, but still trying to tag older threads
[Since, according to Lucy, the source of a Diclonius' powers is the pineal gland, not the horns.]
I'm pretty sure they do come out of my skull, and no, I've never had trouble with them getting caught on things. Although, in the world I was taken to before this one, everyone who got pulled in obtained animal features during certain moon cycles. I got deer features, so my horns would grow into antlers and then I'd have them get caught on things. I even had spots across my face and a deer's tail to match.