Bisul
Boil disease is a collection of accumulated pus in the cavity formed by tissue due to infection or any foreign material. It is a system of self-defense tissue to prevent the spread of infectious substances to other parts of the body. Organisms or foreign substances that enter the tissues kill the surrounding cells, releasing toxins and causing inflammatory responses by attracting many white blood cells to the area and increasing blood circulation around. Thus, pus is a group of dead tissue cells, white blood cells, infectious organisms or foreign substances and toxins released by both organisms and blood cells. The final sturcture of the boils is a boulder wall formed by a healthy cell in an attempt to construct a circular surrounding barrier that restricts infectious substances from surrounding structures. The main symptom and signs of any inflammatory process are redness, heat, swelling and pain. Bisul is able to form any solid tissue but often occurs on the surface of the skin, in the lungs, brain, kidneys and tonsils.