Girls, hi. We went to see a neurologist today to get our vaccinations.…

Girls, hi. We went to see a neurologist today to get our vaccinations. But she said that there were very strong reflexes when she hit the mallet. Who has had this, what does it mean? Also during the examination he started shaking his chin, but it's always frozen like that when we put him in a bath, for example, etc. He is trying to sit down and doesn't like to lie constantly in motion, so she asked why he was so tense, and now I am worried about something. She said everything is fine, but she is concerned about this.