Atypical trigeminal neuralgia is a medical condition that causes severe facial pain. Although there are no specific synonyms for atypical trigeminal neuralgia, there are some similar medical conditions that may cause facial pain. These include trigeminal neuralgia, cluster headaches, and occipital neuralgia. Trigeminal neuralgia is a nerve disorder that affects the trigeminal nerve, which is responsible for sensation in the face. Cluster headaches also cause severe pain in the face, while occipital neuralgia is a condition that causes pain in the back of the head and neck. While these conditions may have similarities, it is important to consult with a healthcare professional for an accurate diagnosis and treatment plan.