Indications that an individual might be experiencing mental health challenges include:

Anxiety - restlessness, breathing difficulties, or decreased mobility.
Unwarranted anger or irritability.
Inexplicable and excessive crying.
Difficulty concentrating or memory lapses.
Incoherent speech.
Inability to engage in a coherent conversation.
Agitation.
Involuntary movements.
Experiencing hallucinations.
Feeling disoriented.
Displaying unusual behaviour.
Removing clothing without apparent cause.
Talking to imaginary individuals.
Engaging in obsessive or compulsive actions.
Neglecting personal hygiene and appearing unkempt.