My GA started 22 years ago on my back, then spread to whole torso, legs, arms. It was very itchy. After several dermatologists, finally got biopsy and diagnosis. And steroid creams. I started taking capsules with Omega 3 oils and using oils or creams to moisturize my skin. Something helped, because it mostly went away, except for my lower legs, where it remained all these years, itching occasionally but mostly causing no harm (except to my pride, because I hated the way it looked).
This spring I was diagnosed with an unusual lung infection, MAC, which required me to go on 3 antibiotics in June. In the past month my GA has flared up, spread to my whole torso, and itches terribly. My dermatologist prescribed a steroid cream, triamcinolone, which has helped a lot. But I can only use it for two weeks at a time, then must take a week off. After 5 days off, the itch comes back strong and I have to use ice packs strapped to the front and back of my body to get to sleep at night! I won't be able to stop the antibiotics until next July... so I may have to endure this GA recurrence until then. I'm 74. Good luck to everyone on this unpredictable journey!