The main ingredient of Fitalin is diclofenac sodium, which belongs to the non-steroidal anti-inflammatory drugs, and can effectively play a role in pain relief for soft tissue as well as joint pain. Intercostal neuralgia is mainly a subjective symptom of the patient, intercostal neuralgia can be categorized as primary or secondary causes. Primary intercostal neuralgia is relatively rare, but secondary intercostal neuralgia can be caused by viral infection, toxin stimulation, mechanical injury, and foreign body compression, all of which can lead to intercostal neuralgia. The pain is mostly a stabbing or burning pain, distributed along the intercostal nerve. Fitalin is a diclofenac sodium cream, which can provide pain relief, but NSAIDs can have a damaging effect on the gastrointestinal mucosa when applied for a long period of time. Fitalin is a non-steroidal anti-inflammatory drug which, if used for a long time, can also cause localized hormonal dermatitis.