On the sole of my foot, one inch up towards the heel from my little toe, 1/4 inch from the outer extremity of the foot, I have developed a lump the size of a pencil eraser of tremendous sensitivity, I have been wearing shoes on a daily basis. According to Reflexology, this indicates a problem with the axillary lymph nodes. I am a diabetic. Can you please help me with a diagnosis??? Thank you so much, Linda.