Neurodermatitis belongs to the group of atopic illnesses which are often hereditary. Alone, however, these are not capable of causing, for example, an eczema, a respiratory allergy or asthma. Only with additional external influences or certain environmental substances can the symptoms then be triggered. At the same time, changes to the immune system of the human body against allergenic substances (such as pollen, household dust or certain foods) can lead to a stronger breakout of the illness.

Diagnostic Essentials for Neurodermatitis in TCM:
(1) Skin lesion often occurs on sthe neck (above 90%), also on the eyelids, extending aspect of the four limbs, lumbus, back, sacral region and hip, not alwayssymmetrical and often localized in 1-2 places. It can also be dissemination pattern to spread over the skin of the whole body.

(2) Paroxysmal pruritus starts in the infected areas primarily. After scratch, patchy erythema appears, or dense flat papule appears first, in size of the needle tip, in the skin color or slightly brown color, and in round or polygonal shape, in dry and solid nature and the forms lichenoid plaque.

(3) It is manifested by serious pruritus, and scratch marks and bloody crust.

(4) The duration is long and it is easy to recur.