A soft, water-filled cushion may be placed on your abdomen or behind your kidney. The body is positioned so that the stone can be targeted precisely with the shock wave. In an older method, the patient is placed in a tub of lukewarm water. About 1-2 thousand shock waves are needed to crush the stones. The complete treatment takes about 45 to 60 minutes. Sometimes, doctors insert a tube via the bladder and thread it up to the kidney just prior to SWL.
Print. 1  Lichen planus. Lichen planus Lichen planus is an inflammatory disorder that appears as purplish, flat-topped bumps when it affects the skin. 2  Lichen planus of nails. Lichen planus of nails When it affects the nails, lichen planus causes thinning, ridging and splitting.
About 20 percent of the time lichen planus of the skin causes minimal symptoms and needs no treatment. However, in many cases the itching can be constant and intense. This disease occurs most often in men and women between the ages of 30 and 70 years. It is uncommon in the very young and elderly.