I personally haven't read about Grover's in the locations you have mentioned. Perhaps you have another form or forms of eczema. Go to dermnetnz.org and go to their eczema site and search though all the forms of eczema. Look at the photos of Grover's, it truly seems yours doesn't fit the profile. Yet as I have 3 forms, with Grover's as one, you could have other forms of eczema which is not uncommon.
Until my cilantro smoothies, daily, no PX treatment helped me. An outbreak had to run it's course. My first outbreak lasted 1 year and then subsequent outbreaks were less severe (still miserable) but timing was 6 months on and 6 months off. One month into my latest outbreak beginning in mid Feb this year, I read about cilantro on this site, started a daily smoothy and within a week it stopped progressing and slowly started healing. Now 4 months later the last scabs are almost all gone, yet after the first week on treatment the itching was lessened and after a month almost gone. Yet it was in the beginning stage of an outbreak. Best of all with cilantro I never got the deep pain.

So do your homework with dermnetnz.org, study Grover's and other forms that have rashes that look like yours (great photos on this site) and unless you have a reason why cilantro won't work for you, just do it and chug it down.

Read this discussion since the beginning and learn how much we use, how often to drink it, tips on storing it and so on.

Also go to earthclinic and read about cilantro for Grover's. From what I have read from other bloggers with Grover's, about 50% or more of us are helped. Frogger and I are 2 of the lucky ones. Also have read cilantro is a heavy metal detox, but still have no idea why it has helped me so much.
.