The DHI is a 25-item self-report questionnaire that quantifies the impact of dizziness on daily life by measuring self-perceived handicap. Item scores are summed. There is a maximum score of 100 (28 points for physical, 36 points for emotional and 36 points for functional) and a minimum score of 0.

The DHI is translated to many languages such as Arabic,[5] Brazilia,[6] Chinese,[2] Dutch,[7] French,[8] German,[9] Italian,[3] Norwegian,[10] Portuguese,[11] Spanish,[12] and Swedish[13] and show good psychometric properties such as validity, reliability and internal consistency in these translations.

DHI Scoring Instructions The patient is asked to answer each question as it pertains to dizziness or unsteadiness problems, specifically considering their condition during the last month. Questions are designed to incorporate functional (F), physical (P), and emotional (E) impacts on disability.

The DHI is a 25-question, self-administered questionnaire used to quickly capture the impact of dizziness. The three possible answers to the 25 questions are 'Always', 'Sometimes', or 'No'. Always yields 4 points, sometimes yields 2 points, and no yields 0 points.

The VSS-SF consists of 15 items. Each item is scored on a 5-point scale (range 0–4), and a measure of symptom severity is obtained by summing the item scores. The total scale score ranges 0–60, higher scores indicating more severe problems. Severe dizziness has been defined as ≥ 12 points on the total scale [10].

Dizziness is a term used to describe a range of sensations, such as feeling faint, woozy, weak or unsteady. Dizziness that creates the false sense that you or your surroundings are spinning or moving is called vertigo. Dizziness is one of the more common reasons adults visit their doctors.

There is a maximum score of 100 (28 points for physical, 36 points for emotional and 36 points for functional) and a minimum score of 0. The higher the score, the greater the perceived handicap due to dizziness.