RT Book, Section A1 Oaklander, Anne Louise A2 Stone, John H. SR Print(0) ID 1180195817 T1 Complex Regional Pain Syndrome (Reflex Sympathetic Dystrophy) & Posttraumatic Neuralgia T2 Current Diagnosis & Treatment: Rheumatology, 4e YR 2021 FD 2021 PB McGraw Hill PP New York, NY SN 9781259644641 LK accessmedicine.mhmedical.com/content.aspx?aid=1180195817 RD 2024/04/19 AB ESSENTIALS OF DIAGNOSISConsider posttraumatic neuralgia (PTN) when an injury causes unexpectedly severe or prolonged distal pain.Injuries that appear minor, eg, phlebotomy, sometimes injure nerves disproportionately.Symptoms can be mild and transient, moderate, or severe and prolonged. Children almost always recover.The complex regional pain syndrome (CRPS) diagnosis requires additional symptoms: eg, asymmetric edema, alterations of cutaneous blood flow or sweating patterns, or movement difficulties.Full CRPS develops only in the limbs.Rare cases that are prolonged, bilateral, or not associated with trauma may be related to internal structural causes, underlying systemic inflammation, immune dysregulation, or to small-fiber polyneuropathy. These cases require additional diagnostic approaches and often have specific treatments.