I think the impact from the tsunami resulted in mental health deterioration of the Thai people and foreigners because of a panic to rush in panic towards the events that occur or grief from the loss of people and property.
I think the impact of the Tsunami affected people of Thailand to mental and foreigners. Because of terror Threat of the incident. Or the grief of losing loved ones and property.
I think the impact from the tsunami resulting in mental health deterioration of people and foreigners. Due to the panic, terror to the incident. Or the sorrow of losing a person love and property.