Hospitalization of children is very different from hospitalization of adults. First of all because of the fact that children get separated from their families and familiar environment, and also because inappropiate approach and conditions can be very harmful to children's emotional development. Not so long ago it was precisely because of the hospital rules that the relationship between parents and children was undermined. Parents were not allowed to hold or touch their children while in intensive care becuse of the fear of infections. As the researchers started to see the importance of social interaction between a mother and a child, the things started to change. The group of researchers from Stanford university made the first big step and allowed the parents' physical contact with their children while in intensive care units. Also, they managed to prove that it does not increase the danger of getting an infection. (Barnett and ass. 1970) [1] A child's reactions and behaviour while hospitalized is mostly conditioned by its age. Preschool children are the most difficult age group, they suffer the most when separated from parents. Children's reactions to hospitalization and possible psychological problems depend on several factors. Some of them are: age, going to hospital preparation, previous experience, ability to adjust, the type and amount of attention they get from their parents and medical staff.Most of the children separated from their parents go through three phases of adjustment to hospital environment: the phase of protest, the phase of despair and the phase of illusory adjustment. [2] Hospitalizing a child is very stressful for the whole family. It is very important to have parents counseled in order to diminsh their stress, as the parents' emotional state affects their child's feelings. The communication between nurses and/or doctors and parents accompanying their child at the hospital is extremely important and it can make medical staff's job and diagnostic as well as therapeutic activities easier. Experience has shown that parents' being present with their child at hospital contributes child's better adjustment to illness and treatment. Humanizing hospitalization which is implemented by recognizing and appreciating sick child's and its parents' needs and problems, as well as by systematic and organized communication improvement, is becoming more and more common. The times where we used to tell a child that it is not going to see a doctor, that it is not going to stay at hospital, that mummy is only ''going out to get some juice'' , where it was a secret that a child is having an operation so it was not prepared, where a child used to wake up in the middle of night, alone, abandoned, lonely, without the parents' support – are luckily behind us. [3]