Voice problems, also called hoarseness or dysphonia, can cause significant morbidity with communication difficulties and social isolation. This review summarises the causes and treatment of voice problems. Common causes of voice problems are related to inflammation, non-physiological usage of the voice, benign lesions of the vocal cords and damage to the nerves innervating the larynx. Nonetheless, it is important to keep malignancy in mind as a differential diagnosis. Referral to an otorhinolaryngologist is recommended for voice problems in adults with a duration of more than two weeks.