A Complete List Of Common Mental Health Diseases

Here’s a list of the most common mental illnesses along with description and symptoms.


Delusions, disturbed thinking, hallucinations and complete withdrawal of all social activities are all signs that point to schizophrenia.

It’s a common mental illness that doesn’t have a specific cause.

While there’s no cure as of today, there are effective treatment methods available for those who are suffering from it.

Many patients diagnosed with schizophrenia can still live their lives with the help of science and medical breakthroughs.


Psychosis in itself is a term used to indicate the patient’s state of mind.

The most common condition is loss of contact with reality, followed by paranoia, disorganized speech and thoughts, delusions and hallucination.

The individual experiencing psychosis will think that these illusions are so real that it affects the person’s behavior, thoughts and feelings.

Pre-existing disorders can trigger psychosis, i.e., psychotic depression, bipolar disorder, schizophrenia, etc.

Personality Disorders

Personality disorders may come in different variations, but they all share long-term behavioral thought patterns that cause people to feel, think and behave in a socially distressing manner.

This impairment hinders the individual’s ability to form relationships and work in a normal setting.

Mood Disorders


Depression is a common mental disease that’s likely to affect all individuals at one point in their lives.

A depressed person will feel despair, frustration and discouragement for days or weeks before ending abruptly.

For some people, depression will continue in a series of lows.

Depression is a seriously debilitating disease that changes how a person acts, thinks and feels.

Moreover, this mental condition can last for months or even years.

If left untreated, the person who has it can become permanently disabled.

Depression is a condition that can affect the whole body.

It can negatively affect sleeping and eating patterns while increasing fatigue and restlessness.

Bipolar Disorder

Bipolar disorder can affect how a person acts, thinks and feels.

Dramatic shifts in terms of mood will be on display when an individual suffers from bipolar disorder.

The person’s feelings can be unnaturally high due to mania, or extremely low from severe depression.

This cycle can last for weeks or months and can cause disruption at work or in relationships.

Patients will need treatment to overcome this debilitating mental disease.

In between the highs and the lows, the patient can function well within society.

If left untreated, the episodes can get worse and happen more often.

A person suffering from bouts of mania can ramp up huge amounts of debt, quit his or her job or feel fully rested after only sleeping a couple of hours.

That same person can feel self-loathing and hopeless over the fact that they accrued too much debt and are jobless and prefer to stay in bed all day.

Anxiety Disorders

Anxiety is an everyday reaction that’s entirely normal.

However, when there’s a degree of life disruption a doctor may diagnose a patient with anxiety disorder.

Those who are suffering from anxiety disorders will find it difficult to adjust to various life aspects, including school, work, family relationships and social interaction.

Panic Disorder

Panic disorders are punctuated by a terrible feeling of impending doom, with extreme terror, fearfulness or apprehension.

These reactions are often accompanied by the following symptoms- chest pain, a choking or smothering feeling, palpitation and shortness of breath.

Panic disorder is diagnosed if an individual experiences recurring and unexpected panic attacks.


Panic attacks become agoraphobia if the person who experienced it will go to great lengths in order to avoid being in the same situation again.

Agoraphobia is the fear of experiencing an episodic panic attack where the individual thinks there’s no chance of escape, or when they think that help is impossible.

Social Anxiety Disorder

Social phobia, aka social anxiety disorder is perhaps the most common form of anxiety disorder.

An individual suffering from this mental disease has a fear of being judged by others that could result in humiliation or embarrassment.

They will avoid speaking in public, doing presentations, eating in restaurants or becoming a part of a gathering of crowds.

Moreover, these individuals will shy away from meeting new people and going on social gatherings.

Post Traumatic Stress Disorder

A person can get PTSD if he or she has experienced a traumatic event that causes distressing psychological symptoms.

Some of the most common symptoms include emotional numbness, flashbacks where the individual “re-lives” the moment, detachment from society, unexplained irritability, recurring nightmares and feelings of immense anger.

Obsessive Compulsive Disorder

OCD is a mental disorder that causes the affected individual to experience impulses, images or thoughts.

It can be so disturbing that it makes the person obsessive.

On the other hand, that same person can feel compulsion to do certain acts in order to get rid of their anxiety.

The fears associated with OCD may include doubting, fear of contamination, having the impulse to hurt another person, thinking of doing acts that are inappropriate and many more.

Compulsions can range from overly and constantly organizing, washing, counting, touching or checking personal possessions.

Eating Disorders

Binge Eating Disorder

People who are diagnosed with this mental condition eat excessive amounts of food to comfort themselves or once they quit a diet program.

Anorexia Nervosa

Anorexia nervosa is the opposite of binge eating disorder as the person goes to extremes in limiting his or her diet and food intake

The belief that one can gain control over his or her life by controlling the amount of food they eat marks this debilitating mental condition.

Bulimia Nervosa

Bulimia nervosa is a combination of anorexia nervosa and binge eating disorder.

A person afflicted with this mental disease alternates between bingeing on food and then purging it out of his or her body.

Much like anorexia nervosa, the individual feels that his or her body shape and weight lends to the illusion that they can control life’s worries.

The cycle starts when that person starts “bingeing”, or eating excessive amounts of food in one go.

They start feeling anxious and guilty about all the weight they gained.

They then try to get rid of it by using diuretics, enemas, laxatives, by vomiting, excessive exercising, by going on another diet or skipping meals.