I am an adult
I am an adult
What causes ADHD?
ADHD is a complex and heterogeneous disease. This means that different people may have different symptoms, with different underlying causes.
With no single cause identified, genetic and environmental factors are thought to play a part in the condition, but our understanding is still incomplete.
Research shows that ADHD tends to run in families. You may wish to discuss this with your family; do you know if anyone in the family has ADHD or may show some of the symptoms but has not been diagnosed?
Environmental factors may include pregnancy/early childhood risk factors (e.g. premature birth, low birth weight or prenatal tobacco exposure), socioeconomic risk factors (e.g. single parent household, paternal history of antisocial behaviour, maternal depression, lower maternal education, lower social class or households of social welfare recipients), or environmental contaminants (e.g. lead exposure).
Research has also shown important differences between the brains of people with and without ADHD. Brain areas affected by ADHD include those involved in:
  • planning and carrying out tasks
  • inhibiting excessive movement
  • shifting focus
  • reward and motivation
We can think of brain connections like the signal on a mobile phone. When the signal is strong, messages can easily get through but if the signal is weak, the message fails to send.
Neurotransmitters are chemicals that are used to pass messages between brain cells. Two neurotransmitters called noradrenaline and dopamine normally connect the prefrontal cortex (responsible for planning and starting and carrying out tasks) and the basal ganglia (responsible for impulse control and coordinating information). In ADHD, levels of some of these chemicals are altered, which disrupts the connections and networks in the brain. This makes it difficult for people with ADHD to concentrate or pay attention.
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Useful Links
    The Staring Back at Me campaign aims to help UK women and non-binary people recognise the symptoms of ADHD in themselves, and provide guidance to support conversations with their doctor, so they can access the support they need. Please visit: https://staringbackatme.org.uk/ to find out more.

  • Born to Be ADHD is your portal for information on:
  • Born to Be ADHD Campaign - encouraging members of the community to take action in addressing stigma and misconceptions surrounding ADHD.
  • Stories that Never Stand Still - a collection of inspiring stories from people living with ADHD to educate and empower those in the community.
  • Educational resources - aimed at members of the community to improve care for those living with ADHD.
  • BorntoBeADHD.co.uk is initiated and funded by Takeda with materials created in collaboration with UK-based patient organisations.

Patient support organisations

Professional organisations