Individuals suffering from low mood or depression have typically been feeling down or depressed on more days than not for a number of weeks. Characteristic symptoms of depression are chronic feelings of sadness, a loss of interest in activities the person previously enjoyed, a loss of appetite and/or weight, concentration difficulties, and feelings of hopelessness.
Individuals suffering from obsessive-compulsive disorder (OCD) typically experience negative thoughts or images which they perceive as unwanted, distasteful or distressing, and they may feel compelled to perform certain behaviours to reduce the anxiety associated with having these thoughts or images (e.g., praying, checking, or cleaning).
A phobia is a persistent fear of a specific object or situation, which is out of proportion or excessive. This fear often causes individuals to avoid situations or suffer through them, as the situation or object will produce a high level of distress.
Social anxiety (also known as social phobia) is a fear of social or performance situations, such as public speaking, social gatherings, meeting new people, eating in public, using public toilets, disagreeing with others, and speaking to authority figures.
Frequent feelings of stress and worry may be a sign that someone is suffering from Generalised Anxiety Disorder (GAD). GAD is characterised by a feeling of persistent nervousness or anxiety that does not specifically apply to any particular circumstances.
Post-traumatic stress disorder (PTSD) is a common reaction to an extremely stressful or traumatic event. Many different kinds of events can lead to someone developing PTSD, including a car accident, rape, being the victim of a crime, physical or sexual abuse, or seeing someone else die.
Bulimia nervosa is characterised by repeated uncontrollable episodes of binge-eating followed by the use of unhealthy compensatory behaviours (e.g., vomiting, laxatives, excessive exercise) to prevent weight gain.