Hi, thanks for sharing your health concerns with HCM and also for youe detailed description!
Well, you said, 'I have no pain, they r firm, and in same place . I have been watching them for 3 years. And the colour over them are normal skin colour' and actually the description itself tells us about the benign nature of the small nodules!
Anyways, If I were your treating Doctor for this case multiple lumps, I would come up with three possibilities, these include:
1. a
lipoma or benign
fatty tumor or
neurofibroma or in worse condition a dermatofibroma
2. The second possibility is of
benign cyst or fibroepithelial polyp-like skin papillomas
3. The last possibility is of accessory breast tissues in females or histiocytoma-like benign skin tumors...!
Overall, it is benign and not to worry about this but you could go for FNAC test for confirmation if still worried!
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.
Wishing you good health.