Benign Paroxysmal Positional Vertigo (BPPV): This condition is characterized by brief, episodic vertigo triggered by head movements, which could also explain the numbness if the patient is experiencing anxiety or stress-related symptoms due to the vertigo. It's a common cause of dizziness and can sometimes be associated with other symptoms like numbness due to the body's response to the perceived imbalance.

Migraine: Migraines can cause a variety of neurological symptoms including dizziness and numbness, often affecting one side of the face. The numbness could be part of a migraine aura or a symptom of the migraine itself.
Multiple Sclerosis (MS): MS is an autoimmune disease that affects the brain and spinal cord, leading to a wide range of potential neurological symptoms, including numbness and dizziness. While not as common as some other conditions, it's a plausible explanation for these symptoms, especially if they are recurrent or part of a larger pattern of neurological issues.
Vestibular Migraine: Similar to migraines, vestibular migraines can cause vertigo and dizziness, and some patients may experience numbness or tingling sensations, including in the face.

Stroke or Transient Ischemic Attack (TIA): Although less common, a stroke or TIA must be considered, especially if the numbness is unilateral and accompanied by other focal neurological deficits. The dizziness could be a manifestation of a posterior circulation stroke.
Acoustic Neuroma: A benign tumor on the nerve connecting the inner ear to the brain, which can cause dizziness, numbness, and other neurological symptoms due to its location and potential to compress nearby structures.
Multiple System Atrophy (MSA): A rare neurodegenerative disorder that can cause a combination of symptoms including dizziness, numbness, and autonomic dysfunction.

Lyme Disease: In rare cases, Lyme disease can cause neurological symptoms including numbness and dizziness, especially if it progresses to neuroborreliosis.
Sjögren's Syndrome: An autoimmune disorder that can affect various parts of the body, including the nervous system, potentially causing numbness and dizziness among other symptoms.
Mitochondrial Disorders: A group of disorders that affect the mitochondria, which can lead to a wide range of neurological symptoms, including numbness and dizziness, due to the high energy demands of the nervous system.