Final answer:
The type of question described in the prompt is an open-ended question.
Step-by-step explanation:
The type of question described in the prompt is an open-ended question. Open-ended questions do not have a specific answer and require more detail and explanation. In this case, the question is asking for the type of question based on a description of a symptom ('His belly was covered with itchy patches'). There could be multiple possible answers, so it is an open-ended question.