How Can I Tell If I have Depression?

Everyone feels sad from time to time, but these feelings usually pass rather quickly. In these situations, this is not "depression." Depression feels different. Someone with depression experiences extreme sadness or despair that lasts more than a couple of days, extending to weeks and even months. People who are truly depressed find that symptoms can interfere with normal, everyday activities, such as going to school or work, even eating and sleeping. They often feel helpless and hopeless, like giving up.

Do You Have These Symptoms?

Regardless of whether you have one or all, you may still be experiencing symptoms from depression. Let your personal doctor and study doctor know which depressive symptoms you have.

  • Sadness most of the day
  • Lack of energy or fatigue
  • Feelings of hopelessness
  • Loss of interest in favorite activities
  • Trouble sleeping or sleeping too much
  • Loss of appetite
  • Difficulty concentrating
  • Irritability, restlessness, or being slowed down
  • Feeling worthless or guilty
  • Significant weight change

What Causes Depression?

Depression can be caused by a variety of factors. Since genetics play a role, if a family member has experienced symptoms from depression, you may be at a higher risk of developing depression yourself. Major hardships and life stressors, such as the death of a loved one or the loss of a job, may also bring about depression. Whatever the cause of depression, it's important to realize that it is a medical illness, just like diabetes or heart disease. It is not something that is your fault or a sign of weakness. It is a medical illness that needs to be treated.

Antidepressant medications are one of the main methods of treating depression. Your doctor can discuss treatment options with you.

Depression is Worldwide

If you are experiencing symptoms from depression, you are not alone. Depression occurs in people of all genders, ages, and backgrounds. It is also common, affecting over 120 million people worldwide. There may be local patient support groups or organizations that may provide you with assistance. Ask the study staff for their advice.

Taking an Antidepressant But Still Feel
Somewhat Depressed?

For some people, finding the antidepressant that works best for them may take several tries. For others, more than one antidepressant is needed. This is when some people consider clinical research studies such as this one as a way to further understand their depression. This clinical study is for people who may need more than one antidepressant to possibly relieve their depression symptoms.