Forensic psychiatrist Merryll Vorster diagnosed Oscar Pistorius with Generalized Anxiety Disorder, in the trial for the murder of his girlfriend, Reeva Steenkamp.

Generalized Anxiety Disorder (GAD) is a medically-recognized, long-term condition.

Oscar Pistorius was diagnosed with Generalized Anxiety Disorder in the trial for the murder of Reeva Steenkamp

People suffering from GAD feel anxious on most days and worry about a wide range of issues.

The disorder is thought to affect around one in 25 people at some point in their lives and is more common in women than in men.

GAD symptoms vary – making it tricky to diagnose. People with GAD may have difficulty concentrating, feel tired and irritable, feel sick, dizzy or sweaty and experience aches and pains.

The disorder tends to run in families, can follow stressful events, and may be linked to chemical imbalances in the brain.

GAD main treatments include using talking therapies, relaxation techniques and medication.