Going insane with my extreme leg itching. I need advice!

I am currently writing this at 3:20 am because the itching on my legs is so intense I am unable to sleep. I have struggled with this for a long time, and I am to the point of leaving scabs and scars all over my legs from scratching.

There is no visible redness or rash before I start scratching. I only notice bumps or hives after I start scratching. A long time ago, I went to see a dermatologist and they told me it was minor eczema. Maybe that's what it is, but I have been unable to find a long term solution.

I have tried several lotions and creams. I am currently using fragrance-free Curél and CeraVe right now. My standard application of these products will occasionally work if the itching is mild. During my more intense episodes, even slathering my legs with them doesn't make a difference. My worst triggers are sweat, getting aggravated or stressed, rainwater on my legs (normal tap water is usually fine), and heat or direct sun exposure on my legs (even under pants).

Shaving is also an issue for me. My legs will get sometimes get irritated a few days after shaving or even directly after shaving. If I don't let enough time pass between shaves, it is instant irritation. However, if I let too much time pass without shaving, the hair growth itself makes my legs itch. This mostly happens on my legs, but it can sometimes happen on my arms (usually not as severe).

I am honestly at my wits' end after struggling with this for years. I would really appreciate any tips, product recommendations, helpful habits, or ideas about what this could be. I feel like I could rip my skin off of my legs. 😭