What Are Some Side Effects of Platelet-Rich Plasma Therapy?

Side effects of platelet-rich plasma therapy injections include slight pain, pinpoint bleeding and redness, according to the National Center for Biotechnology Information. Since physicians obtain platelet-rich plasma from patients' own blood, the chances of adverse reactions are slim, notes the American Orthopaedic Foot & Ankle Society.

Risks related to platelet-rich plasma injections, such as infection and damage to nerves or tissues, are comparable to risks related to cortisone injections, explains the American Society of Orthopaedic Surgeons. As of 2015, whether PRP treatment is effective depends on factors such as a patient's general health, the part of the body undergoing treatment, and whether the injury developed over an extended time period or occurred suddenly.