Final answer:
A sign that a person may need help for a mental disorder is experiencing sudden changes in behavior. It is important to seek professional help if any of these signs are noticed.
Step-by-step explanation:
A sign that a person may need help for a mental disorder is experiencing sudden changes in behavior. This could include changes in sleep patterns, eating habits, mood swings, irritability, withdrawal from activities or social interactions, and difficulty concentrating. For example, if a person who was previously outgoing and social suddenly becomes withdrawn and no longer shows interest in activities they used to enjoy, it could be a sign of a mental disorder. It is important to seek professional help if any of these signs are noticed.
Learn more about signs that a person may need help for a mental disorder