Depression is classified as a mood disorder. It may be described as feelings of sadness, loss, or anger that interfere with a person’s everyday activities

People experience depression in different ways. It may interfere with your daily work, resulting in lost time and lower productivity. It can also influence relationships and some chronic health conditions.

Conditions that can get worse due to depression include:

It’s important to realize that feeling down at times is a normal part of life. Sad and upsetting events happen to everyone. But, if you’re feeling down or hopeless on a regular basis, you could be dealing with depression.

Depression is considered a serious medical condition that can get worse without proper treatment. Those who seek treatment often see improvements in symptoms in just a few weeks.

Depression symptoms

Depression can be more than a constant state of sadness or feeling “blue.”

Major depression can cause a variety of symptoms. Some affect your mood, and others affect your body. Symptoms may also be ongoing, or come and go.

The symptoms of depression can be experienced differently among men, women, and children differently.

Men may experience symptoms related to their:

  • mood, such as anger, aggressiveness, irritability, anxiousness, restlessness
  • emotional well-being, such as feeling empty, sad, hopeless
  • behavior, such as loss of interest, no longer finding pleasure in favorite activities, feeling tired easily, thoughts of suicide, drinking excessively, using drugs, engaging in high-risk activities
  • sexual interest, such as reduced sexual desire, lack of sexual performance
  • cognitive abilities, such as inability to concentrate, difficulty completing tasks, delayed responses during conversations
  • sleep patterns, such as insomnia, restless sleep, excessive sleepiness, not sleeping through the night
  • physical well-being, such as fatigue, pains, headache, digestive problems

Women may experience symptoms related to their:

  • mood, such as irritability
  • emotional well-being, such as feeling sad or empty, anxious or hopeless
  • behavior, such as loss of interest in activities, withdrawing from social engagements, thoughts of suicide
  • cognitive abilities, such as thinking or talking more slowly
  • sleep patterns, such as difficulty sleeping through the night, waking early, sleeping too much
  • physical well-being, such as decreased energy, greater fatigue, changes in appetite, weight changes, aches, pain, headaches, increased cramps

Children may experience symptoms related to their:

  • mood, such as irritability, anger, mood swings, crying
  • emotional well-being, such as feelings of incompetence (e.g. “I can’t do anything right”) or despair, crying, intense sadness
  • behavior, such as getting into trouble at school or refusing to go to school, avoiding friends or siblings, thoughts of death or suicide
  • cognitive abilities, such as difficulty concentrating, decline in school performance, changes in grades
  • sleep patterns, such as difficulty sleeping or sleeping too much
  • physical well-being, such as loss of energy, digestive problems, changes in appetite, weight loss or gain

Depression causes

There are several possible causes of depression. They can range from biological to circumstantial.

Common causes include:

  • Family history. You’re at a higher risk for developing depression if you have a family history of depression or another mood disorder.
  • Early childhood trauma. Some events affect the way your body reacts to fear and stressful situations.
  • Brain structure. There’s a greater risk for depression if the frontal lobe of your brain is less active. However, scientists don’t know if this happens before or after the onset of depressive symptoms.
  • Medical conditions. Certain conditions may put you at higher risk, such as chronic illness, insomnia, chronic pain, or attention-deficit hyperactivity disorder (ADHD).
  • Drug use. A history of drug or alcohol misuse can affect your risk.

About 21 percent of people who have a substance use problem also experience depression. In addition to these causes, other risk factors for depression include:

  • low self-esteem or being self-critical
  • personal history of mental illness
  • certain medications
  • stressful events, such as loss of a loved one, economic problems, or a divorce

Many factors can influence feelings of depression, as well as who develops the condition.

However, in many cases, healthcare providers are unable to determine what’s causing depression.

Depression test

There isn’t a single test to diagnose depression. But your healthcare provider can make a diagnosis based on your symptoms and a psychological evaluation.

In most cases, they’ll ask a series of questions about your:

  • moods
  • appetite
  • sleep pattern
  • activity level
  • thoughts

Because depression can be linked to other health problems, your healthcare provider may also conduct a physical examination and order blood work. Sometimes thyroid problems or a vitamin D deficiency can trigger symptoms of depression.

Don’t ignore symptoms of depression. If your mood doesn’t improve or gets worse, seek medical help. Depression is a serious mental health illness with the potential for complications.

If left untreated, complications can include:

Types of depression

Depression can be broken into categories depending on the severity of symptoms. Some people experience mild and temporary episodes, while others experience severe and ongoing depressive episodes.

There are two main types: major depressive disorder and persistent depressive disorder.

Major depressive disorder

Major depressive disorder is the more severe form of depression. It’s characterized by persistent feelings of sadness, hopelessness, and worthlessness that don’t go away on their own.

In order to be diagnosed with clinical depression, you must experience 5 or more of the following symptoms over a 2-week period:

  • feeling depressed most of the day
  • loss of interest in most regular activities
  • significant weight loss or gain
  • sleeping a lot or not being able to sleep
  • slowed thinking or movement
  • fatigue or low energy most days
  • feelings of worthlessness or guilt
  • loss of concentration or indecisiveness
  • recurring thoughts of death or suicide

There are different subtypes of major depressive disorder, which the American Psychiatric Association refers to as “specifiers.”

These include:

Persistent depressive disorder

Persistent depressive disorder (PDD) used to be called dysthymia. It’s a milder, but chronic, form of depression.

In order for the diagnosis to be made, symptoms must last for at least 2 years. PDD can affect your life more than major depression because it lasts for a longer period.

It’s common for people with PDD to:

  • lose interest in normal daily activities
  • feel hopeless
  • lack productivity
  • have low self-esteem

Here are the 10 things to I do when depressed.

Here are the 10 things not to do when depressed.