Eczema 

Eczema means boil out. 

It is derived basically from the Greek word. 

Eczema is basically a group of skin conditions.

 It is basically inflamed, irritated, itchy skin conditions. 

It happens because of many reasons, right from contact with any kind of allergens, dry skin, sometimes even the cloth what you wear. Because of the dry weather so like that many causes will lead to this eczematous condition. 

Depending on the cause, depending on the site involved, depending on shape, depending on whether it is dry or whether depending on these conditions we divide to the eczema in dry and wet eczema. 

Eczemas are basically segregated or differentiated depending on causes and depending on the duration. So depending on duration we called it as acute Eczema and chronic Eczema. Depending on these cause we called this as atopic dermatitis and nummular eczema, then allergic contact dermatitis, irritant contact dermatitis.