Lucas, an 18-year-old psychasthenic boy, cautiously entered the store. There were too many people inside and the noise seemed unbearable. He quickly collected the necessary groceries and headed to the checkout, his heart beating faster. When it was time for him to pay, he discovered that he had lost his wallet. Fear and anxiety overwhelmed him. Trying to calm down, he began to search his bag for his wallet, but everything around him seemed alarming and overwhelming.