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.
Musculoskeletal Causes. The most common cause of shoulder blade pain is a muscle strain. Short-term overuse of your arms and upper torso may be experienced in your scapula. This pain may be accompanied by pain in other muscle groups, such as your shoulder or back, but can be felt only in your shoulder blade as well. Even something as simple as sleeping in the wrong position (especially prolonged sleeping on one side) could be a cause of this pain.