Which nerve division is responsible for sensation in the forehead area?

The ophthalmic division of the trigeminal nerve (cranial nerve V) is responsible for sensation in the forehead area. This division encompasses several branches that carry sensory information from the upper face, including the forehead, scalp, and upper eyelids. It plays a crucial role in transmitting tactile, pain, and temperature sensations from these regions to the brain.

The other divisions of the trigeminal nerve are more specialized for different areas: the mandibular division primarily serves the lower jaw and surrounding structures, while the maxillary division caters to the middle facial region, including the cheeks and upper lip. The term "frontal division" refers to a branch of the ophthalmic division, but it is not a standalone division of the trigeminal nerve. Hence, the correct answer is specifically the ophthalmic division, which is directly associated with sensory input from the forehead area.