The genus Listeria currently contains 10 species: L. fleischmannii, L. grayi, L. innocua, L. ivanovii, L. marthii, L. monocytogenes, L. rocourtiae, L. seeligeri, L. weihenstephanensis and L. welshimeri. L. dinitrificans, previously thought to be part of the Listeria genus, was reclassified into the new genus Jonesia.tudies suggest up to 10% of human gastrointestinal tracts may be colonized by L. monocytogenes. Nevertheless, clinical diseases due to L. monocytogenes are more frequently recognized by veterinarians, especially as meningoencephalitis in ruminants. See: listeriosis in animals.
In this way, underarm pain can actually cause anxiety, rather than the other way around. Checking if you lymph nodes are swollen is something you can do yourself: simply feel under your arms and check for any small, hard lumps.
Causes of Armpit Pain. If the sweat glands become infected with bacteria it can cause inflammation. Excessive sweating, poor hygiene or exposure to high heat can cause this problem to occur. If the glands are infected in the armpit it can lead to a hardened patch or boils accompanied by a dull, radiating pain.