The mental health toll of wildfires can last longer than people realize, experts say. Here's why.

The California wildfires have left many immediately shaken, but experts say the toll on mental health can last longer than people realize.

Symptoms of trauma may emerge within days of the event, weeks or even months, Dr. Sue Varma, psychiatrist and author of "Practical Optimism," said recently on "CBS Mornings Plus." 

It's not just the immediate news of the wildfire outbreak that caused shock and fear, the unknowns looming over many residents on whether their homes would be impacted also amplified anxiety. Those facing devastation are overwhelmed with uncertainties of the future and feelings of loss, grieving their homes, memories, businesses and loved ones. And many who fared better are dealing with competing emotions like gratitude of survivor's guilt along with grief.