The anticonvulsants carbamazepine and oxcarbazepine are especially effective in trigeminal neuralgia. Occasionally, an epidermoid cyst will present with trigeminal neuralgia. The afferent arc is mediated by the General Sensory afferents of the Trigeminal Nerve. It may be beneficial in trigeminal neuralgia. For treatment of trigeminal neuralgia the procedure may be used repeatedly on patients. There are two main types&colon; typical and atypical trigeminal neuralgia. This disorder is characterized by episodes of severe facial pain along the trigeminal nerve divisions. On entering the brainstem, sensory fibers are grouped and sent to the spinal trigeminal nucleus. Steinem was diagnosed with breast cancer in 1986 and trigeminal neuralgia in 1994. Involvement of the trigeminal nerve can cause numbness of the face. The mechanism of action is thought to be stimulation of the trigeminal nerve. Damage to the trigeminal nerve leads to loss of sensation in an affected area. They are a primary headache disorder of the trigeminal autonomic cephalalgias type. There are around 26,000-43,000 cell bodies in rodent Trigeminal ganglion. All sensory fibers from these nerves terminate in the trigeminal nucleus.