Finger joints have lumps could it be from steaming baby bottles everyday (steams goes on fingers with lumps only)then stepping out in winter weather?

Finger joint pain?: I'm guessing that the bumps on your fingers are there even when you're doing other things. You may just be looking at them when you're being careful around the steam. Arthritis from RA(rheumatoid arthritis), OA(osteoarthritis), psoriasis or gout (rare in women) affect different joints. Either way, it's a good reason to check in with a doctor at this point, particularly if you're having pain.