PRP, or platelet-rich plasma, is a medical treatment that uses a patient's own blood, which is processed to concentrate the platelets and growth factors, and then injected back into the patient's body. Some potential side effects of PRP treatment include: Pain and swelling: PRP injections can cause pain and swelling at the injection site, especially if the injection was done too deep or if the patient is over-sensitive. Bruising: Some patients may experience bruising after PRP injections. Infection: There is a small risk of infection with any injection, including PRP injections. Allergic reactions: Some people may have an allergic reaction to the components in PRP, including itching, redness, swelling, and difficulty breathing. Numbness: Some patients may experience temporary numbness in the area where the PRP was injected. No improvement: In some cases, PRP treatment may not provide the desired results, and the patient may require additional treatments. It is important to consult a doctor before undergoing PRP treatment, and to always follow the recommended dose and usage instructions. Additionally, it is important to note that PRP is still a relatively new treatment and more research is needed to fully understand its effects.