What's the difference between having atopic dermatitis and contact dermatitis?

What causes the itch. Atopic dermatitis is an itch that rashes. Contact dermatitis is a rash that itches. Ad is caused by an internal itch that becomes a rash only after you scratch the skin over and over again. Cd is caused by an external chemical that soaks into the skin and your immune system sends an army of cells to kill all the skin cells that are contaminated with that chemical. That irritates nerves and itches.

Related Questions

What's the difference in appearance between atopic dermatitis and contact dermatitis?

General v. localized. Atopic dermatitis is a chronic condition that is generalized over the entire skin surface, but usually most obvious in the "flexor" areas (crooks of elbows & knees, neck, underarms). Contact dermatitis is localized to the area of contact, and is often streaky in appearance due to the effect of the contact brushing against the skin surface. Atopy also tends to be symmetrical; contact is not. Read more...

Whats the difference between atopic and contact dermatitis?

Very different. Atopic dermatitis is an "inside job" - it usually starts in childhood and involves the skin folds in a symmetrical pattern. Contact dermatitis is an "outside job" - something you're allergic to comes in contact with your skin and causes the rash in an asymmetrical distribution. Read more...

How do I know if I have eczema or contact dermatitis?

Seek Care. Eczema is a generic term for dry, red, irritated skin. Contact dermatitis is an allergic reaction from contact with something your are sensitive to. A detailed history and testing if needed by a medical professional can help determine the cause and appropriate treatment. Read more...

Eczema or contact dermatitis, treatment?

Remove the irritant. Contact dermatitis is a straight forward issue of stopping the exposure. You also want to protect the skin with a good moisturizing lotion. Eczema is something that comes from an internal exposure like a food allergy that alters the immune system. You still want to stop the exposure, but it can be hard to find. Both conditions can be moderated with steroid creams and good lotions. Read more...
Skin Irritants. A list of the top culprits that trigger skin reactions, or contact dermatitis. Some cause symptoms like redness, itchy skin, or inflammation.Some are triggered by an individual's allergy (contact allergic dermatitis) while other chemicals affect everyone (contact irritant dermatitis). http://www.webmd.com/skin-problems-and-treatments/features/dirty-dozen#1. Read more...

Can contact dermatitis change into nummular eczema?

DERMATITIS. Nummular eczema are round inflammatory pruritis skin lesions treated with oral antibiotics and local steroid cream whereas contact dermatitis is caused by irritants or allergens also very itchy treated with antipruritic agents and steroid cream and avoidance of causative factors. Read more...

Wat''s difference between eczema & atopic dermatitis? Which one is harder to treat and difficult to deal with? Can the words be used interchangeably?

Yes, Interchangeable. Atopic dermatitis and eczema are usually interchangeable because they mean the same condition. However, you could have eczema which could be localized such as nummular eczema which is not atopic dermatitis. The term atopic is associated with allergy. Patients with atopic dermatitis do suffer from other conditions such as asthma also. Read more...