Trigeminal Neuralgia: This condition is characterized by sudden, severe, and stabbing pain in parts of the face, typically triggered by light touch or other innocuous stimuli. It's a common cause of facial pain and has a distinct presentation that makes it a leading consideration.

Tension Headache: Often presents with facial pain, especially in the forehead and cheek areas, due to muscle tension.
Dental Problems: Issues like tooth decay, abscesses, or gum disease can cause significant facial pain, often localized to the area of the problem tooth or gum.
Sinusitis: Inflammation of the sinuses can lead to pain in the face, particularly in the areas surrounding the eyes and nose.
Temporomandibular Joint (TMJ) Disorder: Pain in the jaw joint and surrounding muscles can radiate to other parts of the face, causing significant discomfort.

Acute Angle-Closure Glaucoma: A medical emergency that can cause severe eye and facial pain, blurred vision, and is associated with increased intraocular pressure.
Cavernous Sinus Thrombosis: A rare but potentially life-threatening condition that can cause facial pain, especially if accompanied by other symptoms like fever, ptosis, or ophthalmoplegia.
Lymphoma or Other Malignancies: Though rare, facial pain can be a presenting symptom of various cancers, including lymphoma or other head and neck malignancies.

Cluster Headache: A rare but extremely painful condition characterized by clusters of headache attacks on one side of the head, often around the eye.
Glossopharyngeal Neuralgia: Similar to trigeminal neuralgia but involves the glossopharyngeal nerve, causing pain in the throat and base of the tongue, which can sometimes radiate to the face.
Occipital Neuralgia: Involves the occipital nerves and can cause pain in the back and top of the head, occasionally radiating to the face.
Herpes Zoster (Shingles): Can cause facial pain if the trigeminal nerve is affected, leading to a rash and pain in a dermatomal distribution.