PHP 5 Constants. Constants are like variables except that once they are defined they cannot be changed or undefined. PHP Constants. A constant is an identifier (name) for a simple value. The value cannot be changed during the script. A valid constant name starts with a letter or underscore (no $ sign before the constant name). Note: Unlike variables, constants are automatically global across the entire script. Create a PHP Constant.
Pressure sores that do not heal may also cause sinus tracts to form. Sinus tracts are passages that connect the infected area of the skin surface or the sore to other structures, such as those deep in the body. For example, a sinus tract from a pressure sore near the pelvis can connect to the bowel.
In stage 2, the skin breaks open, wears away, or forms an ulcer, which is usually tender and painful. Most stage 2 pressure sores will heal within 60 days with proper treatment. Treatment of stage 2 pressure sores includes: Keeping the wound clean. A health professional will regularly wash the sore with saline solution to keep it clean. Do not use hydrogen peroxide, iodine, or antiseptics on a pressure sore, because these substances can damage healing tissues.