Four types of depression have been newly identified by researchers using brain scans that revealed distinctly different types of brain activity in each sub-type. These finding may eventually lead to treatments targeted to the particular sub-type of depression.
The four different types of depression they identified are:
Biotype 1 is characterised by anxiety, insomnia, and fatigue.
Biotype 2 is characterised by exhaustion and low energy.
Biotype 3 is characterised by an inability to feel pleasure as well as slowed movements and speech.
Biotype 4 is characterised mostly by anxiety with insomnia along with the inability to feel pleasure.