Suggest Treatment For Occupational Dermatitis And Swollen Lymph Nodes In Armpit

Question : It all started with a itchy, scally, burning rash on my hands. It really started irratating me after not having it looked at for over two weeks. It started affecting my sleep and my hands were looking horrible. So finally i went and seen a doctor because my hands looked horrible. The doctor said it was occupational dermatitis that had became infected because i kept itching it and causing it to have pus. I am a hair stylist so my hands are always in hair XXXXXXX hair products, and water. So the doctor perscribed me a steroid and antibiotic. I took the medicine and it seem to go away but i continued working and it seem to come right back and at this time is when i noticed the the two swollen lymph nodes in my arm pit. One being under the arm rifht where the arm meets the arm pit and one being right at the start of the armpit but not mushed together. They are both on my right arm. They are both about the size of a marble and are a little hard and painless. So i went back in to the doctor to take care of my hands again and have the lumps checked out. He prescribed me more steroids to deal with the hands but no antibiotic this time. He said the lymph nodes were swollen because i just had an infection and that what happens. So i took the steroid again and the hands got better but the lymph nodes stayed the same. I continued working and a month later i still have the swollen lymph nodes and just a little irration to my hand, specifically my finger is still a little itchy and has a few little scales and cuts. After reading online about swollen lymph nodes that are firm and painless only associated with cancer i freaked out. I jave anxiety through the roof and i went back to my doctors and he was still convinced it was from my hand infection a month ago. So since i was so upset he ordered me a ultra sound of my armpit. I am still worried and cannot sleep and was wondering if this is lymphoma cancer or could it really be just swollen lymph nodes from my hand irratation/infection? The reason i ask is because google and all my online reseach convinced me that firm painless swollen lymph nodes are only asscoiated with cancer! Please help.