Red and itchy leg also now blistering?

Blistering rash. Blisters with redness and itch can signify a contact dermatitis such as poison ivy or oak or sumac if indeed you have had exposure to weeds or vines outdoors. I would suggest white vinegar soaks and apply Hydrocortisone cream 2-3x/day. If the condition worsens, please see a dermatologist.
Blistering leg. You may have a staph infection caused by scratching and abraiding your skin. Consult your doctor immediately.

Related Questions

I have an itchy spot on my ankle which started like a hive but turned into a dark red blister like thing and is still very itchy and it's now on toes?

Fungus. Fungus on the skin is often associated with skin lesions such as vesicles or rash or red bumps and are very itchy. What may have happened is after scratching the ankle lesion you scratched your toes. The ankle lesion darkened probably from scratching it so much that it bled and formed a dark scab over it. Try over the counter Lamisil (terbinafine) cream. If it doesn't help, see a podiatrist for prescribed meds. Read more...
Woods? Did you go yo the woods or expose shin to plants or hike recently? Could be a allergic reaction, fungal infection, or mild bacterial infection, etc. Read more...

Itchy red welt, then blister. Most on limbs (67).Now even on lips. Brush teeth, spit blood. Bld n nose. BP? Autoimmune? Could the spider bite b4 trigger this?

May be urgent. If this is just developing at this very minute, you may be in the early stages of a severe allergic reaction ("Steven-Johnson Syndrome") which is a medical emergency. If this is acute, TO IMMEDIATELY TO AN EMERGENCY ROOM. If this is not acute, it still will require careful evaluation. Read more...

I have couple of blisters on both of my leg and its itchy started from a red bumb. I don't know where I got it from and how to cure it.

Blisters. A blister can be a symptom of a variety of disorders, diseases or conditions including infection, inflammation, trauma, allergic reaction, and other abnormal processes. Some causes may be relatively mild, such as blisters on the feet from ill-fitting shoes or blisters on the hands from working with garden tools. Read more...