What Is Depression? Symptoms, Types and Treatment Methods

Depression is not just sadness. It is a serious mental health condition that may affect daily life, relationships, work or school performance, sleep and appetite, and it often requires treatment.

What Is Depression?

Depression is a serious state of mental distress that negatively affects a person’s mood, thoughts and behaviors. It should not be reduced to “sadness” or “low morale.” It may last for a long time, significantly interfere with daily activities and reduce quality of life when untreated.

A diagnosis is not based only on feeling sad. Duration and severity of symptoms, impact on daily functioning, accompanying medical or psychiatric conditions and personal safety should be evaluated together.

What Are the Symptoms of Depression?

Symptoms vary from person to person. Low energy, hopelessness, loss of interest, sleep and appetite changes, slowed thinking and physical complaints may occur.

1. Emotional symptoms:
   • Persistent sadness, emptiness or hopelessness
   • Loss of interest and withdrawal from previously enjoyable activities
   • Feelings of worthlessness, guilt or helplessness
   • Irritability, emotional sensitivity or frequent crying
2. Physical symptoms:
   • Low energy and persistent fatigue
   • Sleep disturbance, insomnia or excessive sleeping
   • Appetite changes and weight gain or loss
   • Headache, stomach problems or unexplained body aches
3. Cognitive and behavioral symptoms:
   • Difficulty making decisions and concentrating
   • Social withdrawal
   • Difficulty carrying out daily responsibilities
   • Thoughts of death or suicide

What Causes Depression?

Depression does not have a single cause. In many cases, biological, psychological and environmental factors interact.

• Genetic predisposition and family history of depression
• Functional changes in neurotransmitter systems such as serotonin, dopamine and norepinephrine
• Hormonal transition periods such as pregnancy, postpartum period and menopause
• Childhood trauma, low self-esteem, long-term stress and lack of social support
• Economic difficulties, loneliness, job loss and chronic diseases such as cancer, diabetes, thyroid disease and heart disease
• Alcohol, substance use or side effects of some medications
• Traumatic experiences such as violence, abuse, loss or accidents

Types of Depression

Depression may appear in different types and degrees of severity. Correct identification of the type affects treatment planning, so diagnosis and classification should be made through psychiatric evaluation.

1. Major depression: Persistent low mood, loss of interest, low energy, sleep and appetite changes and feelings of worthlessness that significantly affect daily life.
2. Persistent depressive disorder: Less intense but longer-lasting depressive symptoms, often with chronic low mood and low energy.
3. Seasonal-pattern depression: Symptoms may become more prominent in autumn and winter with low energy, oversleeping and carbohydrate cravings.
4. Postpartum depression: Intense low mood, anxiety, fatigue and difficulty bonding with the baby after childbirth. Professional support is important.
5. Depression with psychotic features: Severe depression accompanied by delusions, hallucinations or impaired reality testing; urgent psychiatric care may be needed.
6. Bipolar depression: Depressive episodes in bipolar disorder. A history of mania or hypomania changes the treatment approach.
7. Premenstrual dysphoric disorder: Severe mood changes and functional impairment during a specific phase of the menstrual cycle.
8. Depressive symptoms due to substances or medical conditions: Related to alcohol, substance use, some medications or medical problems such as thyroid disorders.

Can Depression Be Prevented?

It may not always be possible to completely prevent depression. However, knowing oneself, improving stress coping skills, maintaining regular sleep and healthy habits, strengthening social support and seeking early professional help for mood changes can help reduce risk.

What Is Depression Treatment?

Treatment is shaped according to symptom severity, depression type, accompanying diseases, medications, suicide risk and individual needs.

Common treatment methods include psychotherapy, medication and lifestyle changes. Cognitive behavioral therapy, psychodynamic psychotherapy and other structured psychotherapy methods may help understand symptoms and develop coping skills.

Antidepressant medications may help reduce symptoms and improve functioning in some patients. Effects vary from person to person; therefore medication should only be planned by a psychiatrist, and dose changes or discontinuation should not be made without medical advice.

Regular exercise, healthy nutrition, adequate sleep, avoiding alcohol and substances, social support and stress management can support treatment. In severe, treatment-resistant depression or when suicide risk is present, hospitalization, closer follow-up or more advanced treatment options may be considered.

When Urgent Help Is Needed

Frequently Asked Questions

References

1. Academic Hospital. Depresyon Nedir? Belirtileri, Türleri ve Tedavi Yöntemleri
2. WHO. Depressive Disorder (Depression)
3. NIMH. Depression
4. Mayo Clinic. Depression - Symptoms and Causes
5. Mayo Clinic. Depression - Diagnosis and Treatment
6. T.C. 112 Emergency Call Center. 112 Emergency Call Center