Benign paroxysmal positional vertigo (BPPV) is generally not dangerous, but it can cause discomfort and unsteadiness, increasing the risk of falling. It rarely leads to complications, but it's essential to manage its symptoms effectively.

Symptoms of vertigo include a spinning sensation triggered by changes in head position, such as lying down or turning over. Nausea may accompany it, but severe symptoms like hearing loss or intense vomiting are usually not present. Additionally, a feeling of fullness in the ear may not be associated with this type of vertigo.

If you experience dizziness or vertigo along with certain red flags like a severe headache, fever, double vision, hearing loss, or trouble speaking, it's advisable to seek emergency care. While dizziness is often benign, these symptoms could indicate a more serious underlying issue.

Vertigo itself typically does not cause a hissing sound in the ear. However, tinnitus—a low-pitched ringing, roaring, or hissing sound in the ear—can be associated with vertigo in some cases. If you experience new or unusual tinnitus along with vertigo, it's important to consult a healthcare professional for evaluation and appropriate management.

To prevent vertigo symptoms from worsening during episodes of BPPV, it's crucial to avoid triggering positions and follow any prescribed treatment plans from your doctor. While medications can help alleviate spinning sensations, they may not always be effective for treating vertigo.

Having BPPV in both ears is rare but possible, and extreme cases can lead to dehydration from frequent vomiting. Diagnosis of benign positional vertigo typically involves a medical professional performing the Dix-Hallpike test to assess characteristic eye movements associated with the condition.

Overall, while BPPV itself is not typically dangerous, managing its symptoms effectively with medical guidance is important to ensure comfort and reduce the risk of complications.