I am curious about atopic dermatitis, how long it will last and how long it will be cured!

I was reading a foreign article and saw that atopic skin treatment was mentioned, so I am happy to ask a question.

I am contacting you because there is someone in my family who has been suffering from atopic dermatitis for a long time.
Atopic dermatitis is not just a simple skin disease; it is a chronic inflammatory disease that lowers the quality of life. Itching, which worsens at night, causes significant difficulties in daily life, such as sleeplessness.

I've been consistently using ointments and moisturizers prescribed by the hospital, but my symptoms keep recurring, with brief improvements only to worsen again. This is exhausting and frustrating. I've often heard that atopic dermatitis is "incurable." I'd like to know if treatment is actually possible and what the treatment methods are.

After trying treatment and my symptoms have improved, I am wondering if it is possible to maintain clear skin without taking medication.
The period of time during which symptoms do not recur even after stopping treatment will vary greatly from person to person, but in general, what can we expect?

Also, what are the essential factors (diet, environment, lifestyle) that must be managed to extend this period?
There's a lot I want to know...
thank you