When my skin is really dry, it becomes white and flaky. Is it an eczema rash?

No. People with eczema often complain that their skin is dry, but dry skin, in and of itself, is not the same as eczema. Treatments are completely different as well, so if you aren't sure what is going on, see a dermatologist.

Related Questions

As a permanent eczema sufferer, I've long struggled to find a way to ease the itching despite treatments for dry skin. Even if I constantly moisturise, there is still no way to know when and why an itch or rash will emerge. Have you any suggestions?

With Eczema. Moisturizers, drinking plenty of water. Avoiding long showers, using Luke warm water and prescription topicals will be helpful. Read more...
Eczema may be. related to food sensitivity or allergy. Please see your dermatologist. A good food sensitivity panel is offered by Great Plains Laboratory in KS, USA. The dried blood spot form can be done through the mail. Our skin is a detox organ. Peace and good health. Avoid skin creams containing alcohol, which is drying. Read more...

I have this mark that looks like a burn mark, like from touching a stove or something. I'm not sure if it's eczema or shingles or dry skin or just a rash, should I be concerned?

See your physician. There are many and various lesions which could match your description. I can appreciate your concerned, but finding a proper diagnosis and treatment may be the answer to your worries. Rec.: see your physician for physical and referral to dermatologist (if needed). Take good care. Read more...