about 3 nights ago, I awakened with
a painful sensation in
my left axillary region. My shirt was pulled tight there, so I thought it was trauma to a lymph node. I could feel a pea- sized lump. Since then it has grown to about 2 cm by 1 cm. , and 1 cm in height. It is red and very tender. It is hard to the touch. I have no fever, and no obvious infections on my arm, hand, or chest. I placed topical cortisone oinment and antibiotic cream. Any ideas for differential diagnosis?