Final answer:
The symptoms described suggest a need to seek professional help, as they could indicate depression or a serious mental health issue. Immediate action and intervention from a mental health professional are critical.
Step-by-step explanation:
Considering the symptoms you've described, such as a loss of pride in appearance, sluggish speech, persistent sadness, and giving away possessions, the most appropriate response is to seek professional help.
These are possible signs of depression or another serious mental health issue that should not be overlooked or dismissed as just a phase.
While talking to him about it (which is always a good initial step) and encouraging socialization can be supportive actions, they should not replace the urgency of seeking professional advice. The sooner intervention occurs, the better the chances for recovery or managing the situation effectively.