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.
1 Sweating/Irritation Interestingly, another forgotten cause of underarm pain is sweating. 2  Sweating itself doesn't lead to underarm pain, but what it does do is irritate the skin, which in turn can cause itching or burning that may result in pain.
Underarm rash or armpit rash can be unsightly, embarrassing, itchy, painful, cause a burning feeling or general discomfort. They affect male, female and children (baby, toddle or kids).nderarm rash due to due to allergic reaction or contact dermatitis. Allergic reactions to various chemicals such as soap, shaving creams, body lotions, cosmetics, certain synthetic clothing material, fragrances, or detergents used to clean your clothes can cause rashes especially red itchy rashes.