Possible causes of pain behind the ear include soft tissue injury with infection, trigeminal neuralgia, sebaceous cyst with infection, and so on. 1. Soft tissue injury with infection behind the ear: some people suffer soft tissue injury behind the ear due to external force, if the wound is not clean enough, it is easy to be infected and cause tingling symptoms in the relevant area. 2. Trigeminal neuralgia: this condition refers to a kind of recurring transient paroxysmal pain confined to the innervation area of the trigeminal nerve, which is related to tumor, inflammation, trauma and other factors in the neighboring areas, with the clinical manifestation of electric shock-like and knife-like pain in the affected area. 3. Sebaceous cysts with infection: Sebaceous cysts refer to retention cysts that gradually form when the sebaceous ducts in the affected skin are blocked, and secondary bacterial infections can cause tingling behind the ears. If the symptoms persist or worsen, it is recommended to go to the hospital to get a clear diagnosis so that targeted treatment can be carried out.