These bumps can be due to common warts, nodular fibromatosis, callus hands , pyogenic granuloma or friction blisters. It can be due to punctuate keratoderma also which result in tiny bumps of thickened skin on the palms and soles and usually appears in late childhood or early adulthood.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.