At the beginning of a new semester, as children face a new environment of group living alongside seasonal changes, we often see an increase in children feeling under the weather. They may suddenly say they feel unwell, become more irritable, or act clingy, complaining of pains here and there even if they look fine on the outside. In fact, some may show mild cold or gastroenteritis symptoms, or their rhinitis may worsen.

In Korea, the new semester begins in the spring. Due to the characteristics of spring, there is a large daily temperature range, and external stimulus factors like pollen and fine dust increase significantly. Environmentally, the number of changing factors also rises rapidly, such as school life, new teachers, and new friends.

Because of this, it seems natural for children with weaker immune systems or sensitive temperaments to feel psychological and physical distress. While these may be temporary symptoms, if they are repeated and persist, they could negatively affect the child's growth and emotional development.