A.B.
T.,
One thing I would do is document what you are feeding her and watch her after you feed her. I had seizures when I was younger similar to what you are describing. I would lose feeling in my legs for about 3-4 seconds but be totally alert and could talk to you during that time. Come to find out, I am gluten intolerant. No wheat, rye or barley. So, since your daughter more likely has been introduced to newer foods recently, she may be allergic or intolerant to a food and her nervous system is responding. This is what happens in young children and this is the way their bodies show us. Also eczema, hives, diaper rash are ways through the skin. But I had no skin problems.
I would go the food route first since this is so new and that really is the only changes she has probably experienced in the last couple of months.
I wish you the best w/ your family. A.