Biological

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    Created by
    Hannah

    Cards (2)

    • Genetics
      • OCD runs in families, Inherit a genetic predisposition (risk) to OCD
      • Closer genetic link higher likelihood (concordance)
      • Identical twin concordance is (87%) compared to non-identical 47% concordance
      • Two genes have been linked to OCD
      • SERT – Less serotonin as it is soaked up before it reaches the next neuron (increases anxiety)
    • Neural
      • OCD is due to imbalance of neurotransmitters
      • Serotonin is linked to maintaining a stable mood
      • Serotonin levels are low in those with OCD which can lead to anxiety
      • Low serotonin could be due to serotonin being removed too quickly in the synapse before it can activate the next neuron.
      • Basal Ganglia – responsible for psychomotor skills, this is hypersensitive in those with OCD so it leads to repeated (compulsive) behaviours