Final answer:
Experiencing sudden changes in sleep patterns can be a sign that a person may need help for a mental disorder.
Step-by-step explanation:
A sign that a person may need help for a mental disorder is experiencing sudden changes in sleep patterns. Sleep disturbances, such as insomnia or excessive sleepiness, can be an indication of underlying mental health issues. These changes can include difficulty falling asleep, staying asleep, or changes in sleep duration.
Learn more about Signs of needing help for a mental disorder