Obsessions-persistent and reoccurring thoughts or images that are unwanted and cause distress
Awareness that obsessions and compulsions are not rational; however, they remain hyper vigilant (constantly looking for danger) and have catastrophic thinking (think worst case scenario)
Cognitive coping strategies - people do things that they think will help alleviate their obsessions
Disruption to sleep and eating behaviour - increase (hypersomnia) or decrease (insomnia) and likewise for eating leading to weight loss or gain
Aggression towards self (self-harm) and others
Change in activity levels - usually reduced (lethargy) which leads to withdrawal from work, education and social activities. Sometimes the opposite; psychomotor agitation (pacing up and down)