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Prurigo Nodularis (PN)


 

Prurigo Nodularis (PN)

This is a very strong and severe itchy eczema (nodular prurigo) that has a hard core under the skin. Recently, its incidence is increasing very much. Many of these symptoms start with insect bites in limbs, which gradually spreads to the trunk, and in the worst case they can reach the whole body. Probably some viruses are involved in it. It is a completely different skin disease from psoriasis, palmoplantar pustulosis and atopic dermatitis. Prurigo Nodularis (PN) can occur to anyone regardless of the gender, age, and races.
PN does not develop immediately after being bitten by an insect. In many cases, after three to half a year, eczema accompanied by intense itching is gradually starts forming from the lower limbs. The patient may not know the reason and remain very confused. However, when asked in detail, they can explain of their trip to a mountain half a year ago, and there are reasons such as having been bitten by a black fly. If you suffer from PN, try to remember camping trip in mountains. But some patients with serious atopic dermatitis can suffer from PN concomitantly without insect bites.

Usually the treatment is done with ultraviolet radiation therapy with narrow band UVB, or cryotherapy with liquid nitrogen, or local injection of steroids. However, the condition is troublesome when the symptoms do not go away with those applications. Among skin diseases, following mycosis fungoides and scabies, PN causes most serious itch. More itchy than atopic dermatitis. Therefore, patients often cannot do without even oral administration of steroid pills such as prednisolone. Just recently, I examined a patient with PN who well understood the side effects of steroid pill but couldn't help taking the pill continuously. She had a moon face due to the side effect of the pill. She knew well it. But she cannot stop the pill.

But you don't need to give up the improvement. 70% of eczema will be eradicated in 3 to 4 months by our unique treatment. Without steroid pills or immunesuppressants, you can be free from the serious itch.

 


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