Stabbing pain behind the ear every few seconds often has the following causes: 1. The most common cause may be neurogenic. If a viral infection causes it, the most common one is herpes zoster virus infection, which causes stabbing pain behind the ear more commonly; 2. When systemic diseases may affect these nerves, stabbing pain behind the ear may also occur, because there are usually branches of the nerves behind the ear, such as the greater auricular nerve and the glossopharyngeal nerve, and when these terminal branches are stimulated, different degrees of pain may occur, and sometimes this may cause a kind of intractable pain. That is why people feel nervous; 3. Inflammatory diseases, such as acute mastoiditis, which is most common in children, and boils on the skin behind the ear, which are acute skin infections; 4. Paroxysmal spasms can occur in the muscles behind the ear, and all these causes can cause pain behind the ear to varying degrees. If you often have pain behind the ear, we recommend that you come to a regular hospital to the ENT clinic for a detailed examination to see what exactly is causing the stinging pain behind the ear and to give professional guidance and treatment.