Seasonal affective disorder strikes some in the summer. Climate change may make it worse.  

Story at a glance

• As climate change brings on hotter and hotter summers, health experts worry a type of depression called summer seasonal affective disorder could become more common.  

• People with the condition often grow agitated and irritable as the weather heats, and sometimes experience — or act on — suicidal thoughts.

• Health experts also fear that symptoms of the condition could become worse in those that already have it —potentially causing a rise in suicides.