Ask someone who has been stalked or harassed for months what it felt like, and the answer is rarely just fear. It is exhaustion. A body that will not sleep. A heart that races at a car door closing outside. This is not weakness or overreaction. It is one of the most consistently documented effects of prolonged threat exposure in the research literature, and it deserves to be understood on its own terms, separate from whatever legal path someone eventually takes.
What the Research Actually Shows
Stalking has been studied enough that the health picture is not vague, though the exact numbers shift depending on the sample and how symptoms were measured. In a German community-based study, the most commonly reported symptoms among stalking victims were agitation, anxiety, sleep disturbance, stomach trouble, and depression, in roughly that order. In an earlier, often-cited study of 100 stalking victims, 83 percent reported increased anxiety and 37 percent met diagnostic criteria for PTSD. In one Danish sample of people actively seeking help for stalking, close to 80 percent showed symptom levels consistent with a diagnosable case of PTSD, depression, or anxiety, though that sample specifically drew from people already reaching out for support, which tends to skew toward more severe presentations.
One detail is worth taking seriously without overstating it. Sleep disturbance shows up often and prominently across this research, but it is not always the single highest-scoring symptom, in the community study above, agitation actually ranked higher. What the pattern does suggest is that sleep is commonly one of the places prolonged threat exposure shows up physically: a person can be safe in the moment and still have a nervous system that has not caught up to that fact yet.
The Ledger the Body Keeps
There is a name for this in stress physiology: allostatic load. It refers to the cumulative wear on the body from a stress-response system that gets activated over and over without enough recovery time in between. Short-term stress is not the problem. Bodies are built for that. The problem is a threat response that never fully resets, running the hypothalamic-pituitary-adrenal axis, the body's central stress-signaling system, in overdrive for months or years.
Researchers who study allostatic load have linked chronic stress exposure to cumulative strain across cardiovascular, metabolic, immune, and neuroendocrine systems. In plain terms, a body that has been on high alert for a long stretch can show the cost not just emotionally, but in measurable physical ways.
The exhaustion is not just a feeling. It is consistent with a body of research on how repeated or prolonged stress activation shows up across multiple physical systems.
Where This Gets Complicated, Legally
Here is the part that is easy to skip past but matters: documented health harm and a winnable legal claim are two different things, and it helps to know that up front rather than discover it later.
If police were involved and failed to act, it is tempting to assume that failure plus resulting health harm adds up to a strong case. In practice, that argument runs directly into the doctrine covered elsewhere on this site. Courts have held, in DeShaney v. Winnebago County (1989) and Town of Castle Rock v. Gonzales (2005), that police generally do not have an enforceable constitutional duty to protect a specific person, even with full knowledge of an ongoing threat. A health outcome resulting from that inaction does not, by itself, turn the inaction into a constitutional violation. The harm needs to be paired with an actual legal theory, whether a narrow exception to that doctrine, a claim against a private party, or a specific state law claim, before it becomes something a court can act on.
Causation is its own hurdle too. Chronic stress has multiple contributing causes in almost anyone's life, and connecting one specific health outcome to one specific cause, to the exclusion of everything else going on in a person's life, is exactly the kind of question courts take seriously and often want expert medical testimony to address. A timeline is a start. It is not, by itself, proof.
What Compensable Harm Can Include, Where a Claim Exists
Where a viable legal claim does exist, whether against a private party for harassment or stalking, or against a government entity under a specific state law theory, or in the narrower circumstances where a claim against police is viable, U.S. courts generally recognize a range of harm categories in civil claims:
Treatment costs reasonably connected to the harm, when that connection can be established through records and, often, expert testimony.
Documented lost wages or reduced earning capacity, where the connection to the harm can be shown.
Losses tied to forced relocation or property harm, where a specific legal theory supports recovery.
Recognized across many claim types, though what is available and how much varies significantly by jurisdiction and claim.
Punitive damages exist in some categories of civil claims for especially reckless or malicious conduct, but they remain the exception, not something to plan around in advance.
Keeping a Record, for Your Own Sake First
Separate from any legal strategy, keeping a personal record of symptoms, appointments, and related costs is simply good practice, the same way anyone managing an ongoing health situation would track it. It helps with continuity of care, and it means nothing gets lost to memory later.
- Track symptoms as they happen. Sleep quality, anxiety spikes, physical symptoms, and their approximate timing relative to specific events.
- Keep every bill and insurance statement related to care connected to this period, even ones that seem minor at the time.
- Note missed work or reduced capacity when it happens, rather than trying to reconstruct it later.
- Let treating providers document what they observe in the normal course of care. Their clinical notes, made in the ordinary course of treatment, carry more weight than anything reconstructed after the fact.
Whether and how any of this becomes part of a legal claim, and against whom, is a question for an attorney reviewing the full picture, not something to plan around in advance.
The throughline here is simple: sustained harassment has a real, well-documented physical cost, and taking that seriously does not require a lawsuit to justify it. Whether it also supports a specific legal claim, and against whom, depends on facts and legal theories that only an attorney can properly evaluate.
Dressing, H., Kuehner, C., Gass, P., "Lifetime prevalence and impact of stalking in a European population," British Journal of Psychiatry (2005)
Pathé, M. and Mullen, P.E., "The impact of stalkers on their victims," British Journal of Psychiatry (1997)
Danish help-seeking stalking victim sample, psychological consequences of stalking, cross-sectional findings (PMC, National Institutes of Health)
Allostatic load and cumulative biological risk, review literature (PMC, National Institutes of Health)
DeShaney v. Winnebago County Dept. of Social Services, 489 U.S. 189 (1989)
Town of Castle Rock v. Gonzales, 545 U.S. 748 (2005)