Alalia (alalia; and - – otritsa. Greek lalia – the speech) – absence (or defect) the active speech or its perception at children is frequent + at normal hearing and intelligence. The disease is caused by an underdevelopment or defeat (in the pre-natal, or early post-natal period) speech areas of big cerebral hemispheres.


  • Alalia motor (alalia motoria) – an alalia which is characterized by agrammatisms, insufficiency or total absence of speech products at safety of understanding of the speech;
  • Alalia touch (alalia sensoria) – an alalia which is characterized by disturbance of understanding of the speech at early emergence and safety of speech activity.
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According to WHO researches the daily half-hour conversation by the mobile phone increases probability of development of a tumor of a brain by 40%.