Trigeminal Neuralgia: This condition is characterized by sudden, severe, and stabbing pain or paresthesia in the distribution of the trigeminal nerve, which includes the jaw, cheek, and ear. It is often unilateral and can be triggered by light touch or other stimuli.

Temporomandibular Joint (TMJ) Disorder: TMJ disorders can cause paresthesia in the jaw and cheek area due to inflammation or dysfunction of the joint.
Dental Problems: Issues such as abscesses, impactions, or infections can cause referred pain or paresthesia to the jaw, cheek, and ear.
Ear Infections: Middle ear infections can cause paresthesia or pain in the ear and potentially radiate to the jaw and cheek.

Stroke or Transient Ischemic Attack (TIA): Although less common, stroke or TIA can present with unilateral facial paresthesia, including the jaw, cheek, and ear. Early recognition is crucial for timely intervention.
Multiple Sclerosis: This demyelinating disease can cause a wide range of neurological symptoms, including paresthesia. Unilateral facial paresthesia could be an initial presenting symptom.
Lyme Disease: Neurological manifestations of Lyme disease can include facial paresthesia, among other symptoms, making it a critical diagnosis not to miss, especially in endemic areas.

Ramsay Hunt Syndrome Type 2: This condition, caused by varicella-zoster virus reactivation, can lead to facial paralysis and paresthesia, including the ear and potentially the jaw and cheek.
Glossopharyngeal Neuralgia: Although rare, this condition involves the glossopharyngeal nerve and can cause pain or paresthesia in the ear, jaw, and throat.
Neoplastic Processes: Tumors affecting the trigeminal nerve or its pathways can cause paresthesia in the distribution of the nerve, including the jaw, cheek, and ear.