Benign Paroxysmal Positional Vertigo (BPPV): This condition is characterized by a spinning sensation (vertigo) that worsens with positional changes, such as standing up or lying down. The association with tinnitus, although less common, can occur, making BPPV a strong candidate given the symptoms described.

Meniere's Disease: This inner ear disorder is known for causing vertigo, tinnitus, hearing loss, and ear fullness. The symptoms can fluctuate and may worsen with positional changes, although the primary trigger is not typically positional.
Vestibular Migraine: A condition that can cause vertigo, often accompanied by headache, sensitivity to light and sound, and sometimes tinnitus. The vertigo can be triggered by positional changes.
Labyrinthitis: An inner ear infection that can cause vertigo, tinnitus, and hearing loss. The symptoms can be constant or worsen with positional changes.

Posterior Circulation Stroke: Although less common, a stroke in the posterior circulation can cause vertigo, tinnitus, and other neurological symptoms. It is critical to rule out this condition due to its severe consequences and the need for immediate treatment.
Multiple Sclerosis: This autoimmune disease can cause a wide range of neurological symptoms, including vertigo and tinnitus, especially if the central vestibular pathways are involved.
Acoustic Neuroma: A benign tumor on the nerve connecting the inner ear to the brain, which can cause tinnitus, vertigo, and hearing loss. The symptoms can worsen over time.

Superior Semicircular Canal Dehiscence: A rare condition where there is an abnormal opening in the bone overlying the superior semicircular canal, leading to vertigo and hearing symptoms that can be triggered by sound or pressure changes.
Perilymphatic Fistula: An abnormal connection between the inner and middle ear, which can cause vertigo, hearing loss, and tinnitus, often after trauma, surgery, or barotrauma.