Whilst most patients experience improvements in the symptoms reported, some patients do take a few weeks to respond and improve. ESWT is not without its risks and side effects. The risks and side effects with ESWT are minimal for patients. During the treatment you may experience some pain and discomfort and following treatment you may experience increased pain, swelling, redness, bruising and occasional numbness into the treated area. This usually reduces prior to your next appointment which is usually a week later. Other risks are ligament or tendon rupture or soft tissue damage however these risks are usually very small.