Itchy legs

Since I was a child I've had rashes on my legs, mostly my ankles.  They itched like crazy.  They would become scabs, and itch some more.  Mom used to soak my legs in sea salt, we tried lotions, creams, everything.  I have so many memories of going to Children's Hospital in Washington state as a child, but the doctors there could never figure out what was wrong.  I just had extremely itchy skin. They even tried Uno Boots, I guess is what they called it. I don't even know what that is, it was some sort of medicated soft cast they put over my legs for a week at a time to medicate my skin and keep me from scratching? Anyway, it covered my legs in patches of scabs.  They scarred.  They itch so bad and I couldn't resist scratching until I bleed.  They spread slowly over the years, going from small patches on my legs to bigger patches. Now, in the past year, it covers my entire legs from my calves down and has spread to my feet.  I can't live like this anymore.  My legs are just giant scars.  They itch all the time.  And wher it used to bleed when I'd scratch, it now releases clear liquid, I don't know what it is.  My legs always swell now, and it hurts. My legs hurt when I shower, the water hurts them.  And, to add to this, my arms have become sort of rashy lately.  Not like my legs. Itchy, little red bumps around my wrist and up my arms.  They itch.  I'm so tired of always itching, so tired of having to always wear pants and long sleeves to hide it!  I'm 24 and have never been able to wear shorts.  I don't like looking at my own legs, I don't want anyone else to.  No one in my family has any kind of skin problems.  Well, one of my sisters has an allergy to metal or something.  But nothing like what I have...Lucky me.  I seriously can't live like this anymore.  I'm tired of crying myself to sleep at night.  If anyone knows anything that will help, please! I am desperate.