Livedo is more like a net like presentation in appearance.

http://www.picturesdepot.com/medical...ticularis.html

http://en.wikipedia.org/wiki/Livedo_reticularis
Mine does not look like this:
http://www.google.com/imgres?q=lived...r:18,s:0,i:158

But when I was younger, I did have some of this veining on my hands at times. But no longer at all. I have nothing on my hands now.

Mine has that look only where it breaks up as the unaffected skin starts. Cold does not bring mine out. Mine seems to be affected by heat.

I never had it until I developed that reaction to the water upNorth. We used to only go there in August (we shared the house with an aunt, who has passed on). When we started using the property in June, I'd get this red rash on my arms when I washed dishes...only on the left arm. It would go away in about 2 weeks and I'd be fine the rest of the summer.
Then one year I had a bit of too much sun too quickly before my tan got going, and I flared up with a photosensitive reaction.
My ears, arms, knees, were blistering, burning. Not alot of sun but my son and I were in the water that day alot. That time I had a fever, and felt really ill. Since we now had zebra mussels, and I am allergic to raw seafood, I assumed that was the culprit. So I contacted the professor at WSU who specializes in zebra mussels, (new invasive species) and he suggested the algae link. So I have found online articles about blue green algae and toxins that irritate the skin, etc.

My skin redness is fading a bit finally, but is more solid and redder, in appearance than livido...but yes, it is similar. It can resemble a sun tan or sun exposure at times. For a while I thought it was
tinea versicolor, but antifungal treatment has no effect on it.
I've tried menthol too... because at one point I was using Salonpas on my wrists for my carpal tunnel, and the redness stops where the patches were! When I tan, this red area tans darker than the normal skin areas too..and that is true for tinea.

The Biotin seems to be helping with it. I think with longer use it might actually fade more. I have been thinking that the severe skin reaction I had, destroyed the top layers of skin so that the deeper layers are more visible now. I don't have this anywhere else, not on the legs, etc.

Also no one else gets this upNorth from the water...only me.
I found an interesting photo once of photosensitive contact dermatitis which was very similar (to myreaction to the algae bloom). Also the photos of pellegra are similar too. I have a little patch of redness near my neck as well (where the sun hits). But niacin does not change my skin rash at all. Mine is not dry or itchy either. It was activated by UV exposure initially however.

I've had alot of autoimmune testing over the years. Two big panels 10 yrs apart ..nothing. No Hashimoto's antibodies either.

I am thinking mine is similar to livedo. The mucinosis factor sounds like the hypothyroid angle...deposition of mucin in the skin.
http://medical-dictionary.thefreedic...y.com/myxedema
I do have the edema factor. It is one thing the levothyroxine has not helped much.