The Four Sub-Types of ADHD
Recently, I wrote a post about the four neural sub-types of depression. That classification was based on resting stage fMRI comparing depressive patients with controls; I hope someone does similar studies for other psychiatric conditions.
English: Symptoms of ADHD described by the literature (Photo credit: Wikipedia)
The current post is an attempt to delineate what may come out in such a study if done for ADHD. I will be focusing on ADHD as it manifests in children, adolescents as well as adults.
I will be mostly relying on factor analytical studies of ADHD that have typically revealed 3 to 4 underlying factors.
ADHD has typically been diagnosed by looking at symptoms from inattentive or hyperactive-impulsive domains. You can find the DSM-5 criteria here. And its sub-types are combined presentation, predominantly inattentive presentation and predominantly hyperactive-impulsive presentation.
As per some studies, a majority (as much as 90 %) of ADHD subjects have inattentive symptoms while a few have hyperactive-impulsive symptoms. This is analogous to the depression findings that predominately depressive patients have a core pathology marked by low mood ; and subtypes marked by say anergia, anhedonia and anxiety.
However, factor analytical studies have presented a more nuanced picture. As per this study [pdf] there are four underlying factors of ADHD.
Inattentive/ cognitive problems
Hyperactivity/restlessness
Impulsivity/ emotional lability
Problems with self-concept
The fir...
Source: The Mouse Trap - Category: Psychiatry & Psychology Authors: sandygautam Tags: ADHD creativity Source Type: podcasts
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