Which of the following best describes arousal and reactivity symptoms of PTSD?

Arousal and reactivity symptoms of PTSD are characterized by heightened emotional and physiological responses to traumatic stress. These symptoms often include physical manifestations such as an increased heart rate, which reflects the body’s acute stress response, commonly known as the "fight or flight" response. When a person experiences traumatic events, their body may react as if under constant threat, leading to sensations like a pounding heart.

Additionally, difficulty concentrating is also a common symptom associated with arousal and reactivity. Individuals with PTSD may find it challenging to focus or remember details due to their hyper-alert state and the overwhelming nature of their emotions. This can lead to increased distractibility and trouble completing tasks.

The option that encompasses both the increased heart rate and difficulty concentrating captures the essence of arousal and reactivity symptoms, illustrating how the body and mind respond to trauma.