Get the following words written on a thick piece of paper
فِی نوحٍ رَاحَ زَھَا نِیّٰهً
and rub this paper on that part of the body which is affected by eczema. When the paper is torn burn it and get it written on a new piece of paper. Rubbing of the paper is to be done, in anticlockwise circles for about 5-7 minutes.
As long as the treatment is carried out the patient should abstain from salt, chillies, spices and meat of all types. This includes eggs and fish.