Eczema Treatment Care

Try to figure out whoch one i have. My so called “doctor” told me i had cellulitis, which was (excuse my language) but, total bull. I researched and looked up different rashes, and skin allergies/irritants, and turns out i have eczema. But i’m not sure if it’s Atopic dermatitis or Contact dermatitis. What’s the difference, cause they both kind of look the same. Help?
<33

i really dont know if what type of dermatitis do i have

Try to figure out whoch one i have. My so called “doctor” told me i had cellulitis, which was (excuse my language) but, total bull. I researched and looked up different rashes, and skin allergies/irritants, and turns out i have eczema. But i’m not sure if it’s Atopic dermatitis or Contact dermatitis. What’s the difference, cause they both kind of look the same. Help?
<33

My dog Brandon, an American Staffordshire Terrier/Rottweiler Mix was diagnosed with allergic contact dermatitis and irritant contact dermatitis. What is the difference between these two diseases? The way they are described, they sound like the exact same disease. Could somebody tell me what the difference is?