Treatment for Tree Lichen. While lichen on tree bark is harmless, some people find it not very pretty to look at and would like to learn how to kill tree lichen. One way is to gently scrub the bark of the tree with a soapy solution. Since lichen on tree bark is only lightly attached, it should come off easily.
Brodie's abscess is a disease of the bone observed most commonly in the long bones like the femur and the tibia. It is a form of osteomyelitis or bone infection and is considered a subacute form, as the symptoms differ from those observed in patients with acute osteomyelitis.
Pilonidal disease is not a cyst (an epithelial-lined sac), it is an abscess (a cavity filled with infected fluid and/or debris). The fluid, if present, is infected fluid called purulent material or pus, and the debris is usually loose hair.ilonidal disease affects a very specific area of the body called the natal cleft. The natal cleft is the 2-3 inch valley under the tailbone that is hidden by oneâs buttock cheeks when standing. It is bracketed above by the coccyx (tailbone), and below by the anus. Formation of abscesses.