Sometimes, you notice physical signals first: poor sleep, constant fatigue, or recurring bodily complaints. Recognizing an underlying depressive strain behind these signs can be challenging.

A hidden depression can manifest in various ways. Alongside feelings of low mood and loss of interest, issues such as sleep disturbances, difficulty concentrating, inner restlessness, or deep exhaustion may occur. Frequently, however, physical symptoms take center stage initially. These can include headaches, neck or back pain, gastrointestinal issues, dizziness, sleep disruptions, or severe fatigue.

Physical causes should always be medically evaluated. Only after other explanations have been ruled out or thoroughly examined can the emotional layer be addressed more directly.

The National Clinical Care Guidelines point out that patients do not always discuss their mood first during medical appointments. Instead, issues such as sleep problems, exhaustion, persistent pain, or gastrointestinal complaints often take center stage. As a result, the underlying depressive burden can initially go unnoticed.

Research also demonstrates a clear link between chronic pain and depression: in a European study involving nearly 19,000 individuals, 17.1 percent reported at least one chronic painful physical condition, including joint and rheumatic diseases, back pain, headaches, and painful gastrointestinal disorders. Among individuals diagnosed with depression, however, that figure rose to 43.4 percent. This does not mean that pain automatically points to depression, but it can serve as a reason to look more closely at mood, motivation, and overall well-being alongside physical causes.

A "hidden depression" is not an independent diagnosis in the ICD-10, the International Classification of Diseases published by the World Health Organization (WHO). Rather, the term describes a presentation where depressive symptoms are less obvious or where physical symptoms dominate the picture. Depression itself is classified in the ICD-10 under depressive disorders, such as a depressive episode (F32) or recurrent depressive disorder (F33).

When non-specific physical complaints are particularly prominent, somatoform disorders, also called Somatic Symptom Disorder (F45), may also play a role in the diagnostic evaluation depending on the exact symptoms present. What matters most is an individualized professional assessment, as physical symptoms can stem from many different causes.

Not every depression looks the same on the outside. Sometimes changes in sleep, physical well-being, thoughts, or behavior occur before the underlying depressive burden is recognized as such.

A hidden depression can manifest physically before your own mood is perceived as problematic.

Possible physical symptoms of a hidden depression include:

• Headaches
• Neck and back pain
• Sleep disturbances
• Severe fatigue and lack of drive
• Gastrointestinal issues such as nausea, diarrhea, constipation, or bloating
• Loss of appetite or changes in eating habits
• Heart palpitations or feelings of chest tightness
• Dizziness and lightheadedness
• Shortness of breath
• Inner restlessness and physical tension
• Decreased sexual desire

However, a list like this is not a diagnostic tool. Back pain, headaches, or stomach problems have numerous possible physical causes. Therefore, if symptoms appear for the first time, persist, or worsen, they should always be evaluated medically.

Additional signs of a hidden depression may include:

• Persistent low mood or inner emptiness
• Loss of joy and interest
• Self-doubt
• Continuous rumination and overthinking
• Difficulty making decisions
• Concentration problems and forgetfulness
• Feeling overwhelmed quickly
• Irritability or inner restlessness
• Increasing social withdrawal

In some people, the strain shows less through sadness and more through irritability, anger, or a constant feeling of internal pressure. This can make recognizing the condition even more challenging.

Some people have learned to keep pushing through daily life, even when they are struggling deeply on the inside. To the outside world, they may seem balanced, friendly, or high-performing. For instance: you go to work in the morning, complete your tasks, and smile while talking to colleagues. Yet after work, you have no energy left. You withdraw, have no appetite, and lie awake at night. At first, you might only notice the sleep issues and the exhaustion.

What matters most, therefore, is not simply how someone appears to others, but how their mood, behavior, energy levels, and physical well-being have changed over time.

This pattern is sometimes referred to as high-functioning or functional depression. It describes a form of depression where affected individuals continue to appear capable and productive externally while suffering internally from severe emotional strain.

A hidden depression can present differently in women and men. However, these patterns are not rigid rules: depressive symptoms can manifest very differently in every individual. In women, symptoms such as persistent low mood, rumination, exhaustion, withdrawal, or physical complaints are more commonly recognized. In men, on the other hand, depressive strain more frequently surfaces through irritability, internal tension, anger, or an intense drive to keep functioning regardless of emotional pain.

Ultimately, gender alone is not the decisive factor. What matters most is whether your mood, behavior, drive, sleep patterns, or physical well-being have changed significantly over an extended period.

A test can provide an initial orientation for a hidden depression if you recognize yourself in some of the described changes. However, it cannot determine whether a depression is actually present.

An evaluation with a doctor or psychotherapist is particularly recommended if:

• Symptoms persist over an extended period of time
• Managing your daily life becomes increasingly difficult
• Physical symptoms recur repeatedly
• You find yourself withdrawing significantly from others
• You experience little to no joy or interest in things you used to enjoy

When seeking care, it is helpful to talk about more than just individual physical complaints. Describe as concretely as possible what has changed and for how long. For example: "I haven't been sleeping well for several weeks, and I no longer have any energy for things that are usually important to me."

Would you like to assess your depressive symptoms yourself?

Try the deprexis self-test. It can help you better understand your current mental state and get an initial impression of whether depressive symptoms may be present.

Please note: A self-test does not diagnose a hidden depression. It can only indicate whether further evaluation might be useful. A formal diagnosis of depression must be made by a healthcare professional. They will evaluate not only individual symptoms, but also their duration, severity, and overall impact on your daily life, while also ruling out potential physical causes.

If you notice that your mood, physical symptoms, drive, or daily routine are out of balance, you do not need to change everything all at once. Small, concrete steps can be a meaningful starting point.

Track Changes Over Time

• Keep a brief log for a few days to monitor how you feel. When are you particularly exhausted? When do pain or digestive issues flare up? How well are you sleeping? Are there specific situations where your mood drops significantly? This creates a clearer picture that can help both you and a healthcare professional later on.

Plan for Energy, Not Just Time

• It helps to stay aware of your available energy and prioritize tasks accordingly. Consciously schedule recovery breaks and try not to consume all your energy on work and obligations alone.

Mindfulness, Relaxation, and Gentle Movement

• Mindfulness and relaxation exercises can help you notice internal tension more consciously and find calm. Gentle movement can also be beneficial, especially when dealing with co-occurring physical complaints or pain. A short walk, mild stretching, or other low-impact activities offer accessible ways to stay active without placing extra strain on your body.

Stay Connected

• If social gatherings feel overwhelming right now, try a smaller step: a brief phone call, a short walk with someone close to you, or a text message to someone you trust. Total social withdrawal can quickly build momentum, whereas opening up to friends or family can relieve pressure and make changes noticeable sooner.

Have Physical Symptoms Medically Evaluated

• Headaches, heart palpitations, digestive issues, or back pain should not be prematurely dismissed as purely emotional. Seeking a medical evaluation is always the proper first step when symptoms are new, persistent, or changing.

If you feel the need to hide or mask your symptoms from the outside world, reaching out for help can feel daunting. You do not have to wait until your daily life is severely impacted to get support. Alongside medical and psychotherapeutic care, digital health applications offer a low-threshold way to start addressing your symptoms.

One such online therapy program is deprexis. Designed to help you rediscover a sense of lightness in your daily life, deprexis supports you with a personalized program, targeted exercises for managing low moods, and practical guidance for self-care.

deprexis is available free of charge via prescription. The costs are fully covered by your health insurance provider. This means your doctor or psychotherapist can prescribe deprexis for you, and you will receive an activation code for the program. As soon as you have your code, you can easily redeem it on our website and launch your digital therapy right away.