Hi, I had gone through your question and understand your concerns.
Prurigonodularis is a condition in which there will be excess growth of cells due to constant itching and continuous replacement of dead cells with new cells leads to nodule formation.
It is a benign condition and may not transform into cancer.
Treatment Of this is by -
Use lots of moisturizer and take plenty of water.
Anti allergen like Levocetrizin at night to decrease itching.
Instead of steroid you can use other agents like-coal tar, calcitriol.
some dermatological procedures like -
cryotherapy,
laser therapy,photo therapy will decrease the nodule size.
There are some drugs to prevent the cell division like
Methotrexate,
isotretinoin. (take with doctor prescription only)
consult a good
dermatologist.
Hope this answers your question. If you have additional questions or follow up questions then please do not hesitate in writing to us. I will be happy to answer your questions.