Sores/ rashes on my legs.

Lily-Anne
I have these sores or rashes on my legs, but they originally started as just an itch. At night these areas would itch so badly I made them bleed, which has caused the sores, but they still itch like absolute crazy. If anything goes near them they itch. I've tried all sorts of eczema creams, moisturisers, allergy pills, they won't go away now that they're there. 
Has anybody else has these or know what they might be?