An itchy inflammation of the skin. Atopic dermatitis usually develops in early childhood and is more common in people who have a family history of the condition. The main symptom is a rash that typically appears on the arms and behind the knees, but can also appear anywhere.

There are also some common symptoms for all types of eczema:

• Dry, scaly skin redness itching, which may be intense.

Dyshidrotic eczema Symptoms:

Fluid-filled blisters form on your fingers, toes, palms, and soles of your feet these blisters may itch or hurt the skin can scale, crack, and flake. The cause of dyshidrotic eczema is unknown. However, it can be associated with a skin disorder called atopic dermatitis, as well as seasonal allergies. Small, fluid-filled blisters appear on the palms, fingers and soles of feet. They often last about three weeks and itch intensely.

In Atopic dermatitis Symptoms:
The rash often forms in the creases of your elbows or knees

• Skin in areas where the rash appears may turn lighter or darker, or get thicker
• Small bumps may appear and leak fluid if you scratch them
• Babies often get the rash on their scalp and cheeks
• Your skin can get infected if you scratch it.

In Contact dermatitis Symptoms:
It comes in two types: Allergic contact dermatitis is an immune system reaction to an irritant, like latex or metal. Irritant contact dermatitis starts when a chemical or other substance irritates your skin.

In Seborrheic dermatitis Symptoms:
Seborrheic dermatitis causes scaly, oily patches of skin that produce dandruff-like flakes. These patches often appear where there are more sebaceous (oil-producing) glands on the body. This includes the hairline, scalp, upper back, nose, and groin

Other types of eczymas are Neurodermatitis, Nummular eczema, Stasis dermatitis, Hand eczema.