  The healthcare sector is an important pillar of every community, numerous
research studies have been carried out in this context to optimize medical
processes and improve care quality and facilitate patient management. In this
article we have analyzed and examined different works concerning the
exploitation of the most recent technologies such as big data, artificial
intelligence, machine learning, and deep learning for the improvement of health
care, which enabled us to propose our general approach concentrating on the
collection, preprocessing and clustering of medical data to facilitate access,
after analysis, to the patients and health professionals to predict the most
frequent pathologies with better precision within a notable timeframe.
  keywords: Healthcare, big data, artificial intelligence, automatic language
processing, data mining, predictive models.
