A lump on the middle of the lower spine could be symptomatic of osteomyelitis (a bone infection usually accompanied by pain and inflammation), an abscess (if the lump is on the skin as opposed to the actual vertebra bene... More » Health Pain & Symptoms

An ache in the armpit may indicate the presence of an abscess, which is a tender, fluid-filled lump caused by the body's inflammatory response, states WebMD. Other causes of aches in the armpit include swollen lymph node... More » Health

A shortened neck muscle or a malformed cervical bone in the spine cause infant torticollis, according to WebMD. Torticollis usually occurs when the muscle that runs along the back of a baby's neck is damaged before or du... More » Family Parenting Babies & Toddlers
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The symptoms of a bone infection, or osteomyelitis, include signs of inflammation in the area of the infected bone, according to WebMD. The area may also be swollen. The patient may experience fever, tiredness and irrita... More » Health Conditions & Diseases

The main causes for a lump found underneath the jaw include an indication of the presence of bacterial infections, viral infections, infections caused by bug bites, such as Lyme disease, types of noncancerous growths lik... More » Health Pain & Symptoms

Symptoms of a bruised tailbone include inflammation at the base of the spine, lower back pain, numbness when sitting, painful bowel movements and pain above the buttocks, according to MedlinePlus. Serious symptoms, such ... More » Health Pain & Symptoms

Middle back pain in women is caused by overuse of the muscles in the back, poor posture, injury to the muscles or discs that support the spine, and muscle strain, explains WebMD. Some women may injure the middle area of ... More » Health Pain & Symptoms