In conventional medicine, you can apply steroids creams, take antihistamines or steroid pills. On the other hand you can use nutritional therapy to heal this problem. Below is a pic of my client, very depressed due to this condition, hide himself at home, went to see all the skin specialist he can find yet no solution but it got worse!!
PM me if you need more info.

Two immunosuppressives on the market now.

Tacrolimus (Protopic)

Pimecrolimus (Elidel)
Doesn't work as well as the steroids. Expensive.

Tacrolimus was originally developed to suppress organ transplant rejection.

Pimecrolimus is probably safer than tacrolimus.
For a start :

Take 6 500 mg evening primrose oil capsules a day. The cheapest is probably
the Naturalle brand by Upha.

Use a good moisturiser cream whenever you can. I use cocoa butter.
Cheapest is Fruit of the Earth.

Colloidal oatmeal bath lotions are supposed to be good, but expensive.
You can buy at pharmacies.

Otherwise, use any good mild soap or bath liquid like Cetaphil. Pine tar also
helps some people.

I use "Taharah" soap, made from mud at hot springs, which you can buy at some
of these Malay stalls in shopping complexes. $ 5 each.

Sometimes I also use "Najwa" black seed soaps, which you can buy at some
department stores.

Doctors usually give Oilatum or Eubos soaps, but expensive.

For eczema on your feet and lower legs, soak in Cosway's Zara sea salts, or any
good Dead Sea salts you can buy. The Himalaya rock salts are also supposed to help.

Lactacyd bath lotions are also alright.

At one time I ordered quite a lot of Emu oils from the States, but haven't in some
time. A bit expensive. Use it as a moisturizer.

For steroid creams, use the following which are safer :

Mometasone (Elomet)
Fluticasone
Clobetasone (Eumovate, U-Closone)

Mometasone is expensive, but some generics around. Use around
your face and groin.

No generics for fluticasone on the market here yet.

Clobetasone is a old steroid, low-medium potency (in between hydrocortisone
and betamethasone valerate), but it has a lower systemic absorption.
Eumovate by Glaxo is expensive, so get U-Closone.

For places around your groin or face, you can also use Efficort (hydrocortisone
aceponate), which is in a colloidal form.