The first sign of dermatitis is a red, itchy rash.
The red itchy rash for dermatitis will usually occur where your skin flexes which is inside your elbows.
When I had dermatitis the red itchy rash started inside my elbows and was a red in color and itchy rash.
The dermatitis rash can also sometimes leak out a fluid when you scratch the rash where the dermatitis is occurring or when the rash crusts over.
Some fluid leaking is normal and can mean that the dermatitis is clearing up.
You can get some prescription ointment from your doctor to get rid of the dermatitis.
Taking a warm bath with some Epsom Salt or applying a cool wet cloth to the dermatitis or applying some over the counter medicated creams to the dermatitis can help.
Eventually the dermatitis will usually go away on it's own but treatment can help ease the itching and make the dermatitis go away on it's own.