When someone is dealing with depression, medication is often the first step. But when medication doesn’t ease the symptoms, many people turn to a proven, non‑drug treatment like TMS therapy.

But what happens if those symptoms return?

A depression relapse, defined by clinicians as the reappearance of depressive symptoms during the recovery phase, can feel devastating, as if nothing you tried actually worked. In reality, that’s not true. Recent research shows that a second course of TMS therapy can be even more effective than the first, offering renewed relief for returning symptoms.

AwakeningsKC provides TMS therapy and additional treatment options, including ketamine therapy at our clinic near Kansas City.

TMS Study: TMS Found to be More Effective During Second Round of Treatment

The landmark study, published in Acta Psychiatrica Scandinavica, was conducted in collaboration among Discovery Behavioral Health (our parent company), Harvard Medical School, and Mass General Brigham Hospital. Researchers followed 259 patients across 20 Discovery outpatient TMS centers over three years, all of whom returned for a second course of TMS therapy.

Here’s what the study found:

• Second‑course response rate: 82.5% of patients responded during their second treatment course, compared with a 66.8% response rate seen across the system during first courses.
• Second‑course remission rate: 54.2% achieved remission during retreatment, versus a 39.0% remission rate during first courses.
• Patients who previously remitted: Among those who fully remitted during their first course, 86.1% responded again during retreatment, and 71.3% achieved remission again.

This study represents one of the largest real‑world groups of patients ever evaluated after receiving a second course of TMS. Its findings give clinicians practical, easy‑to‑apply guidance when helping patients decide whether retreatment is a strong option after depression symptoms return.

Choosing TMS therapy is almost always a sound decision. Noninvasive, efficient, and performed without anesthesia, TMS offers meaningful hope for people facing treatment‑resistant depression, relapsing depression, and several other mental and physical health conditions.

What is a Depression Relapse?

A depression relapse isn’t an official medical term, but it generally refers to the return of significant depressive symptoms after someone has begun recovering from a previous episode. In other words, it’s depression that comes back during remission.

It’s also different from recurring depression. A relapse happens before full recovery has been sustained, often after weeks or months of improvement. Recurring depression, on the other hand, involves a new depressive episode that appears after a longer period of recovery.

What Causes a Depression Relapse?

Depression doesn’t always follow a straight path toward recovery. Even when someone is improving, symptoms can return, and that return is often called a depression relapse. Relapses are common, and they don’t mean a person has done anything wrong or that their treatment has failed. Instead, they reflect how complex depression is and how many factors can influence mood over time.

Several things can contribute to a relapse:

Biological Vulnerability

Many people have underlying biological patterns that make them more prone to depression. These can include:

• A genetic predisposition
• Chronic inflammation
• Changes in neurotransmitter activity
• Disruptions in sleep and circadian rhythms

Even when symptoms improve, these biological factors may still be present, creating a window where depression can re‑emerge.

Stress and Major Life Events

Stress is one of the strongest triggers for relapse. Events like job loss, relationship conflict, grief, or financial strain can overwhelm the brain’s coping systems. Even positive changes such as moving, starting a new job or becoming a parent can create enough stress to destabilize recovery.

Incomplete Recovery

Sometimes symptoms improve but don’t fully resolve. When someone is feeling “mostly better,” it’s easy to assume mental health treatment recovery is complete, but lingering symptoms can leave the brain vulnerable. In these cases, even small stressors or routine challenges can push symptoms back into the foreground.

Medication Changes or Reduced Effectiveness

Adjusting medication doses, stopping medication too soon, or experiencing a gradual loss of effectiveness (sometimes called tachyphylaxis) can all contribute to relapse. The brain may respond to these changes by re‑expressing symptoms that had previously been controlled.

Underlying Conditions

Anxiety disorders, PTSD, chronic pain, substance use disorders, and medical conditions like thyroid disease or autoimmune disorders can all increase relapse risk. When these conditions flare, depression often follows.

Lifestyle Disruption

Many lifestyle factors can contribute to a depression relapse:

• Sleep loss
• Irregular routines
• Isolation
• Poor nutrition
• Reduced physical activity

These factors don’t cause depression on their own, but they can make the brain more susceptible to symptoms returning.

Psychological Patterns

Negative thinking styles, unresolved trauma, or perfectionistic tendencies can resurface during stressful periods. When these patterns intensify, they can contribute to a relapse even if someone has been doing well.

What are the Warning Signs of a Depression Relapse?

Recognizing the early signs of a depression relapse can make a meaningful difference. When symptoms return gradually, people often dismiss them as stress or fatigue. But noticing these shifts early allows someone to seek support before the relapse becomes more severe.

These signs don’t confirm a relapse on their own, but they’re important signals to pay attention to and discuss with a qualified healthcare professional.

Here are some of the most common early indicators:

• Changes in mood: Feeling more irritable, sad, or emotionally flat than usual. These shifts may be subtle at first, showing up as a general sense of heaviness or reduced enjoyment in daily life.
• Loss of interest: Activities that once felt meaningful or enjoyable start to feel like chores. People may withdraw from hobbies, social plans, or routines they previously valued.
• Sleep disruptions: Trouble falling asleep, waking frequently, oversleeping, or feeling unrefreshed can all signal that mood patterns are shifting.
• Energy changes: A noticeable drop in motivation, increased fatigue, or difficulty completing everyday tasks can be early signs that depression symptoms are returning.
• Difficulty concentrating: Trouble focusing, making decisions, or staying organized often appears early in a relapse, even before mood symptoms intensify.
• Negative thinking patterns: More frequent self‑criticism, hopeless thoughts, or a return of familiar depressive thinking styles can indicate that the brain is slipping back into old patterns.
• Social withdrawal: Pulling away from friends, family, or coworkers—whether by canceling plans or avoiding communication—can be an early behavioral sign.
• Physical symptoms: Headaches, stomach discomfort, appetite changes, or general aches can accompany mood shifts and may appear before emotional symptoms become obvious.

TMS Therapy: What is it?

Transcranial magnetic stimulation (TMS) is a noninvasive, drug‑free treatment that uses gentle magnetic pulses to stimulate areas of the brain involved in mood regulation. It’s FDA‑approved for depression and several other conditions, and is often recommended when traditional treatments, like medication or talk therapy, haven’t provided enough relief.

During a TMS session, a small electromagnetic coil rests against the scalp. This coil delivers magnetic pulses through the skull, generating tiny electrical signals that activate underactive brain regions linked to depression. Over time, this repeated stimulation strengthens communication between brain cells and supports healthier, more stable mood regulation.

How Does TMS Therapy Help Treat Depression?

Depression is associated with reduced activity in a key brain region called the left dorsolateral prefrontal cortex (DLPFC)—an area responsible for motivation, decision‑making, and emotional regulation. When this region becomes underactive, its communication with deeper emotional centers, such as the amygdala, weakens, making mood harder to regulate.

TMS works by delivering magnetic pulses that gently activate this underactive area. As the DLPFC becomes more engaged, it strengthens its connection to the brain’s emotional networks, helping restore healthier mood regulation. Each pulse creates a tiny electrical current in the targeted brain cells, and over repeated sessions, this stimulation leads to:

• Increased neural activity in brain regions that are sluggish during depression
• Improved communication between mood‑related networks
• Strengthening of healthy pathways that support emotional stability
• Reduction of overactive stress circuits that contribute to depressive symptoms

This process reflects neuroplasticity: the brain’s ability to reorganize, form new connections, and build healthier patterns over time.

Why Repeated TMS Sessions Work

TMS isn’t a one‑time treatment. The brain changes gradually, which is why a typical course involves daily sessions for several weeks. With consistent stimulation, the brain begins to “learn” new patterns of activity, similar to physical therapy for the brain.

As these neural circuits strengthen, people often experience:

• More stable mood
• Improved motivation and energy
• Better concentration
• Reduced anxiety
• Less emotional reactivity
• Greater ability to enjoy activities again

Many patients start noticing changes around the second or third week, though some respond earlier or later.

Relapsing Depression isn’t Your Fault

A depression relapse isn’t your fault, and it’s important to say that plainly. When symptoms return after you’ve worked hard to feel better, it’s natural to blame yourself or assume you “should have done more.” But depression doesn’t work that way.

Here’s why: Depression involves shifts in brain chemistry, stress‑response systems, and neural circuits. These aren’t things you control through willpower. They’re biological processes similar to blood pressure, thyroid function, or insulin regulation. When symptoms come back, it reflects how the condition behaves, not anything you did wrong.

Many people experience depression in episodes, with stretches of improvement followed by periods where symptoms return. This pattern is extremely common. A relapse doesn’t mean you didn’t try hard enough, didn’t stay positive, or didn’t “want recovery” enough. It simply means your brain is still healing, and sometimes it needs additional support.

It’s also important to remember that major stressors, grief, burnout, illness, or big life changes can activate underlying vulnerabilities. You can be caring for yourself, using your tools, staying connected…and still experience a relapse.

That isn’t failure. That’s being human.

Need More Help? Find it Through TMS Therapy at AwakeningsKC

If you’re experiencing relapsing depression, don’t lose hope. Many people who responded well to TMS the first time continue to benefit from additional sessions when symptoms return. AwakeningsKC offers retreatment plans designed to help you regain momentum, rebuild stability, and feel like yourself again.

A relapse doesn’t mean you failed; it simply means your brain may need another round of support. Because TMS reinforces the neural pathways involved in mood regulation, retreatment often works faster, more predictably, and with higher response rates than the first course. It’s a powerful way to build on the progress you’ve already made.

If you’re noticing symptoms creeping back in, you don’t have to wait for them to intensify. Our team can help you explore whether a second course of TMS is right for you and guide you toward the next step in your recovery journey.

Reach out to AwakeningsKC to learn more.

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Frequently Asked Questions

What is a depression relapse?

A depression relapse happens when symptoms return after you’ve already improved or reached remission. It’s a common part of major depressive disorder and doesn’t mean you’ve done anything wrong.

Why does depression relapse?

Relapse can occur because of biological vulnerability, lingering symptoms, major stress, or changes in treatment. Even when you’re doing everything “right,” depression can still re‑emerge.

Is a depression relapse my fault?

No. Depression involves brain circuits and stress‑response systems you can’t control through willpower. A relapse reflects how the condition behaves, not a personal failure.

How can TMS therapy help with a depression relapse?

TMS uses magnetic pulses to stimulate underactive mood‑regulation areas in the brain. This helps restore healthier neural activity and reduce returning symptoms.

Does TMS work again if symptoms come back?

Yes. Many people who responded to TMS before respond again during retreatment, sometimes even faster.