hello my 12 year old son has something similar. about a week ago he had a blistering rash on his arm. by that night the rash was gone and he had fever headache fatigue. the following day the blustering rash came back but on his shoulders that time. the rash is itchy and painful when touched. i took my son the the doctor while the rash was present. the doctor is not sure what it is. he thinks it some rare form of chickenpox shingles or herpes type virus. my son started taking acyclovir yesterday. so far no improvement. the rash is still coming and going ramdomly all over his body. i should note my son has been vaccinated for chicken pox.
i have a itchy rash that comes and goes what could be causing this? . the rash appears in different areas of my body for an example a rash showed up on my wrist and stayed a while and went away. later the same day it appeared on my stomach and then on my thighs etc. its itchy while it is present. at one point my hands first turned red and then start to itch really bad to the point i had to wash my hands repeatedly. i work in the medical field so i wash my hands a million times a day. what could be causing this reaction?