How to Talk to Someone About Getting Evaluated After an Old Concussion

You have watched someone you love change, and you have run out of easy explanations. The person you married, or grew up with, or built a life beside is still here, but something is different. The spark dimmed. The sleep went sideways. The patience thinned out. Maybe you have quietly connected it to an old hit years ago, a car accident, a fall, a rough game, a fight, a blast, and maybe you have wondered if it matters now. If you are trying to figure out how to help someone concussion depression may be part of the picture for, the hardest part is often not the medicine. It is the conversation. This is a calm, practical guide to having that talk.

Why an old hit can still matter

People assume a bell-ringing hit either knocks you out or it does not, and that if you walked away, you were fine. The research tells a slower story. People who have taken a hit like that are more than three times as likely to have depression, and that risk does not fade quickly, it can persist for years (Beaton et al., 2020, Frontiers in Neurology). Roughly half of people who took a significant hit are not fully back to their old baseline years later (TRACK-TBI, 5-year outcomes). So when you feel like the person came back a little different, you are not imagining it, and you are not being dramatic.

Two other quiet threads often travel with an old head injury. Sleep gets disrupted for a large share of people with that history, somewhere in the range of 30 to 70 percent. And up to about one in six can develop a hormone deficiency after a hit that nobody ever checked for. None of this is meant to alarm you. It is meant to explain why "just try harder" and "get more sleep" have not worked, and why this deserves an actual look rather than a guess.

Why standard antidepressants sometimes miss

Here is the part that reframes the whole conversation. When depression follows an old hit, standard antidepressants often underperform. In one meta-analysis, antidepressants used after a head impact showed no significant difference from placebo (Foreman et al., 2019, J Head Trauma Rehabil). That is not a knock on the person for "not responding." It is a clue about mechanism.

Most familiar antidepressants work on serotonin. But some depression appears to run on a different system, glutamate, which governs how brain cells form and strengthen connections. Ketamine and esketamine act on that glutamate system, with effects that can be measured in hours rather than weeks, opening a roughly 24 to 72 hour window of heightened neuroplasticity (Zanos and Gould, 2018, Molecular Psychiatry). This is why a proper evaluation asks a different question than "which pill next." It asks whether the standard tools were aimed at the wrong system all along.

To be clear about what this does and does not mean: a history of getting your bell rung is a risk factor for depression that resists standard treatment. It is not, by itself, a reason for any specific medicine. Spravato (esketamine) is FDA-approved for treatment-resistant depression, not for concussion. The value of a clinic with neurology on staff is diagnostic, a way to look carefully at why standard care may have missed, not a promise of any particular result.

How to actually start the conversation

The instinct is to lead with the problem: "You have been impossible lately." That puts them on defense. Lead instead with the person and with the injury, not with a verdict about their character.

• Pick a low-stakes moment, not the middle of a fight. A drive, a walk, doing dishes side by side.
• Name what you see, gently and specifically: "You seem worn down in a way that started a while back. I have been thinking about that hit you took." Observations land softer than diagnoses.
• Separate the symptom from their worth: "This does not feel like a willpower thing to me. It feels like something physical that nobody has looked at."
• Offer a small, concrete next step rather than a life overhaul: "I read that an old head injury can affect mood years later. What if we just get it looked at?"
• Expect resistance and do not argue it away. "I hear you. I am not saying you are broken. I am saying I love you and I want someone to actually check."

You do not have to win the conversation in one sitting. You are planting a reframe: this may be biology from an old injury, not a personal failing. That single idea often does more work than any argument.

When the conversation needs to be gentler still

Sometimes what you are seeing is heavier than low mood. A history of a concussion has been associated with elevated odds of death by suicide (Erlangsen et al., 2018, JAMA). If your person ever talks about not wanting to be here, or you feel a pit in your stomach reading this, you do not have to hold that alone. In the US you can call or text 988, any time, day or night, and reach a trained person. Bring warmth, not panic. "I am not going anywhere" does more than any statistic. The goal of this whole conversation is not to frighten anyone into action, it is to open a door.

What an evaluation can look at

When someone is finally ready, the useful thing is that the questions get concrete instead of circular. Depression is measured with a standard score, the PHQ-9, at every visit, so progress is tracked and not just felt. The history of the hit gets taken seriously. Sleep and other overlooked threads get put on the table. And because some data suggests a head-injury history can raise long-term dementia risk by roughly 24 percent over many years (Lancet Psychiatry), taking an old injury seriously now is simply good stewardship of a life, not a reason to spiral.

Brain Recovery Centers is locally owned in St. Peters, Missouri, serving St. Charles County, St. Louis County, and the greater St. Louis metro, and it has neurology on staff precisely so this kind of question can be examined properly. If the story here sounds like the person you love, a proper evaluation from a clinic that can look at the old injury and the current depression together is a reasonable and hopeful next step. You do not have to have all the answers before that conversation. You only have to open the door, and let someone with the right lens look.