What causes adhd?

Not Known. Although there is clearly a genetic component to add/adhd the cause is truly unknown at this time. There are conditions that mimic , but the true causes need to be determined.
ADHD. No single specific etiology. Most accepted theory is combination of biological-psychological-social attributes.
Genes. Most cases (> 95%) of adhd are inherited and worsened by prenatal events such as prematurity, smoking, neonatal illness or stress. Rarely, a brain injury or insult can result in "acquired" adhd. This would include chemobrainsuch as from cancer treatment, of after an infection such as meningitis or encephalitis, or an injury such as concussion or brain contusion or hematoma.

Related Questions

What causes ADHD medicine out of your system?

METABOLISM. Most adhd medication metabolizes fairly rapidly, usually within hours. Traces of medication may last longer but are unlikely to be clinically significant. Read more...

Short term memory problems at 22. Long term memory is not impaired. Once information is learned it is stored forever. What can cause this? ADHD?

Many causes possible. ButI always ask my patients in a psychiatric evaluation: were you ever a really good student in elementary school? If so, most like it is not ADHD. Why? because ADHD shows up early in life not later, say in middle school onwards. In fact, the American Academy of pediatrics has pushed detection to include preschoolers. If affecting daily life, see a doc to rule out any physical issues first. Read more...

What is the cause of adhd?

Genetics. Most cases of adhd are inherited. There is great evidence to indicate that adhd is inherited and passed on for parent to child. Many factors can determine if inherited adhd will penetrate into clinically significant adhd, but it's genetic nature is indisputable. Read more...
A neurodevelopmental. Disorder: many studies in adults with adhd show insufficient circulating Dopamine in parts of the brain that inhibit behavior, from changes in structure/function of the Dopamine transporter gene or some Dopamine receptor genes. Risks for adhd go up with prenatal exposure to tobacco, alcohol & drugs, infections, low birth wt., many syndromes, & anything else that impacts brain development. Read more...
Neurochemical. ADHD is a result of a biochemical imbalance of brain transmitters. Dopamine and Nor Epinephrin levels have been found to be low in the brain in ADHD. The cause is usually inherited. It can be acquired as a result of brain trauma or infection. There are many causes of inattention which may mimic ADHD. Read more...

What are the causes of ADHD and how can I stop it?

ADHD. Adhd is a neurological condition with genetic causes increased by psychological or environmental factors. However, attentional issues cause be cause by depression, anxiety, insomnia, epilepsy/seizures, head injuries, substance use, thyroid issues, and other medication conditions. A medical evaluation may be warranted. Coping skills through therapy can also be useful. Read more...
Underarousal. Underarousal in the frontal lobes is the general cause for adhd symptoms. Medications and therapies are effective in treating the disorder. See your doctor for starting treatment or getting a referral to a psychiatrist or psychologist. Read more...