Risks associated with ADHD
Individuals with ADHD are at increased risk for behavioural, emotional, and mental disorders.
Behaviour disorders such as oppositional defiant disorder (ODD) and bipolar disorder (BPD) are common comorbidities with ADHD. Individuals with ODD are likely to be defiant and have disruptive behaviour patterns, further exhibiting oppositional behaviours towards authority figures. Individuals with BPD experience extreme mood swings that include emotional highs (mania or hypomania) and lows (depression), often leading to marked impairments in social or occupational functioning. These disorders may increase the risk of interpersonal violence in people with ADHD.
Mood disorders, including anxiety and depression, are also common among people with ADHD. Anxiety disorders are found in a large percentage of individuals with ADHD. Those with comorbid anxiety tend to have more severe symptoms and a greater risk for substance use disorders. Depression is also common amongst individuals with ADHD. Depression can occur as a result of difficulty managing symptoms, workload, or interpersonal relationships, resulting in feelings of loneliness, hopelessness, and depression.
ADHD is also strongly linked with impulsive behaviour, leading individuals to be more likely to struggle with self-control, and possibly substance use disorder. Individuals are also more likely to engage in risky behaviour, unsafe sexual practices, and gambling. Increased difficulty with executive functioning and decision-making cause individuals with ADHD to be more prone to engaging in sensation-seeking tendencies, often overlooking the associated risks.
Many individuals with ADHD, notably children, also have a learning disorder. In addition to symptoms of ADHD like difficulty sustaining attention and staying organised, individuals with comorbid learning disabilities may experience more difficulty in school or at work. A learning disability means that an individual has a clear difficulty in one or more areas of learning despite intelligence being unaffected. Types of learning disorders include dyslexia (difficulty with reading), dyscalculia (difficulty with maths), and dysgraphia (difficulty with writing).
Sleep disorders are common among people with ADHD. One reason for this is that ADHD can interfere with the body's circadian rhythm - sleep-wake cycle - leading people to feel sleepiness and wakefulness cues at different times than they normally would. Moreover, individuals taking psychostimulant medication may also experience symptoms of sleep disorders, such as difficulty winding down or falling asleep at night.