Hermione later disguised herself as Bellatrix to get into her vault in Gringotts, which was guarded by a dragon; Bellatrix never knew of this. It is presumed that, in Harry Potter and the Deathly Hallows Part 2, Bellatrix was the one who killed Tonks as in the book, since Tonks's death is never shown on-screen.n Harry Potter and the Order of the Phoenix, Bellatrix was broken out of Azkaban by Voldemort and some of his Death Eaters, along with Antonin Dolohov and many other Death Eaters.
Additional Causes. Migraine attacks may cause vertigo that can last a few minutes or a few days. Stress, food allergies and hormonal changes can cause migraine-related vertigo. Less likely causes of vertigo may involve neurological problems, including brain hemorrhage, stroke or multiple sclerosis.
Vertigo can either result from a problem with our inner ear, the nerve between the inner ear and the brainstem, or the brain itself. Medications like antihistamines, benzodiazepines, or anticholinergics can suppress the vestibular system, and may do so in a way that causes dizziness or imbalance.