A racing heart, shaking, or breathlessness can feel frightening, especially when you do not know why it is happening. Anxiety is one possible explanation, but it should not become an automatic label for every bodily symptom. This adult-focused guide explains what an assessment may check, how medical and mental health care can work together, and when symptoms need urgent attention.
Why physical symptoms deserve a balanced assessment
Anxiety can involve muscle tension, stomach discomfort, sweating, lightheadedness, and disrupted sleep. Panic attacks can involve chest pain, a racing heart, and difficulty breathing. These sensations are real, not imagined. However, recognizing them as possible anxiety symptoms does not establish their cause in an individual person. [2], [10]
An assessment considers several possibilities: an anxiety disorder, a physical condition, medication or substance effects, or overlapping problems. A medical illness can also coexist with anxiety. The aim is to identify a useful explanation and care plan without either dismissing bodily symptoms or assuming that every sensation signals serious disease. [1], [2]
Our guide to understanding anxiety provides broader background. This resource focuses on the medical questions that may arise during an adult assessment. It is not a diagnostic checklist. You can ask your clinician to explain what supports their working diagnosis, what remains uncertain, and what would prompt them to reconsider it.
Symptoms that need emergency care
Call 911 if you think you may be having a heart attack, even if you are unsure. Warning symptoms can include chest pressure or discomfort, pain spreading to the arms or jaw, shortness of breath, sweating, nausea, or lightheadedness. Heart attacks do not always begin with dramatic pain. Do not drive yourself or wait to see whether relaxation helps. [6]
Sudden one-sided weakness or numbness, trouble speaking, new vision problems, loss of balance, or a sudden severe unexplained headache can indicate stroke. Call 911 immediately, including when symptoms improve. A past anxiety diagnosis should not override these warning signs. [7]
Palpitations accompanied by chest pain, shortness of breath, loss of consciousness, or significant lightheadedness also warrant emergency help. For suicidal thoughts or an emotional crisis in the United States, call or text 988. Use 911 for immediate danger or a medical emergency. THE BALANCE is not an emergency service. [5], [13]
The history your clinician may take
Expect questions about when symptoms started, how often they occur, how long episodes last, and how they affect daily life. Describe what happened before, during, and afterward. For palpitations, useful details include whether the sensation started suddenly, felt regular or irregular, and occurred at rest, during activity, or when distressed. [2], [5]
Bring a short timeline rather than trying to provide a perfect account. You might note a recent illness, prescription change, sleep disruption, or change in alcohol use. Include previous investigations and treatments, if available. Ask whether the clinician can review existing records before repeating tests.
Assessment should also consider distress, avoidance, work, relationships, and self-care rather than relying only on a symptom count. A screening questionnaire can help organize the conversation, but it cannot replace clinical judgment. Our UK-focused anxiety assessment guide describes the process in a British care context; US referral and payment arrangements differ. [1]
Medical conditions that can resemble or accompany anxiety
An overactive thyroid can cause nervousness, tremor, sleep difficulty, heat intolerance, weight loss, and a rapid or irregular heartbeat. That combination may justify thyroid evaluation, particularly with a relevant history. Symptoms alone cannot diagnose thyroid disease, and anxiety alone does not mean that your thyroid is abnormal. [3]
Low blood glucose can cause shakiness, hunger, dizziness, confusion, and a fast or irregular heartbeat. It is especially relevant for people taking insulin or certain other diabetes medicines. Report whether episodes relate to missed meals, activity, or diabetes treatment. If you already have a diabetes emergency plan, follow it; do not assume these symptoms are panic. [4]
Palpitations can occur with anxiety but can also reflect an abnormal heart rhythm or other physical factors. Respiratory conditions may coexist with panic disorder, so breathing symptoms deserve their own history and examination. These examples guide targeted assessment; they are not a list of conditions everyone needs testing for. [2], [5]
Tell your clinician about fainting, bleeding, unexplained weight change, or a clear change in exercise tolerance. For a blackout, clinical guidance supports investigations directed by the suspected cause, such as glucose testing for possible hypoglycemia or hemoglobin testing for possible anemia or bleeding. [11]
Medicines, supplements, caffeine, and withdrawal
Bring a complete list of prescriptions, nonprescription medicines, supplements, nicotine products, and recreational substances. Some decongestants and medicines used for asthma or heart conditions can contribute to palpitations. Ask a clinician or pharmacist whether the timing of symptoms suggests an adverse effect or interaction. Do not stop necessary medication simply because it appears on a list of possible contributors. [5]
Include caffeine from coffee, energy drinks, workout products, and medicines. Too much caffeine can cause anxiety, restlessness, shakiness, insomnia, and a fast heartbeat. Sensitivity and product content vary, so describing what you actually consume is more helpful than reporting only that you drink coffee. [12]
Withdrawal is another important possibility. Suddenly stopping benzodiazepines or reducing them rapidly can produce serious, potentially life-threatening reactions. Alcohol withdrawal can cause anxiety, sweating, tremor, and a rapid heartbeat, with severe cases involving confusion or seizures. Seek medical advice rather than attempting a DIY taper or detox. Tell the clinician when you last used the substance or medicine. [8], [9]
What an examination and targeted tests may check
A clinician may perform a physical examination after reviewing your history. The findings help determine whether medical testing is appropriate. You can ask what the examination is assessing and whether anything changes the urgency of care. A mental health evaluation and a physical evaluation answer related but different questions. [2], [10]
Testing should address a specific concern. Thyroid blood tests may help investigate suspected hyperthyroidism. An electrocardiogram, or ECG, records the heart's electrical activity and may be used for palpitations. Some people need longer heart monitoring or other cardiac testing, depending on the findings. These are examples, not a routine package for everyone with anxiety. [3], [5]
For a true blackout, clinicians may examine cardiovascular findings, review medications, and use an ECG. Additional investigations depend on the history and suspected explanation. NICE, the UK clinical guideline body, recommends a structured assessment of transient loss of consciousness rather than attributing it to anxiety without evaluation. US care pathways may differ. [11]
Before testing, consider asking: What question will this answer? What happens if it is normal? Who will explain the result? When should I return? NICE guidance for an apparent panic attack in emergency care recommends the investigations needed to exclude acute physical problems, not indiscriminate testing for every possible disease. [1]
How an anxiety diagnosis is made alongside medical care
Anxiety disorders have recognizable clinical patterns. Generalized anxiety disorder involves persistent, difficult-to-control worry alongside associated symptoms. Panic disorder involves recurrent unexpected panic attacks followed by ongoing concern or behavior changes. A single panic attack is not the same as panic disorder, and a normal medical test is not itself an anxiety diagnosis. [2], [10]
The assessment may also consider depression, trauma-related symptoms, other anxiety disorders, and substance use. Several conditions can be present together, and their timing helps clarify treatment priorities. This avoids forcing all symptoms into one explanation when separate problems need attention. [1]
If the explanation still feels unclear, ask for a follow-up discussion rather than choosing between accepting everything as anxiety and rejecting mental health care entirely. Useful questions include whether the diagnosis is provisional, what has been evaluated, and which unresolved symptom matters most. You should leave knowing how to seek reassessment if the pattern changes.
Choosing care when physical illness and anxiety overlap
Treatment may involve psychotherapy, medication, or both, chosen around your needs, preferences, and medical situation. Existing physical illness should be part of that decision. For example, ask whether a proposed medicine interacts with current treatment, what adverse effects to watch for, and how follow-up will be coordinated. [2], [10]
Cognitive behavioral therapy is a research-supported option for anxiety and panic disorder. In this context, ask how the therapist will distinguish anxiety-related avoidance from medically necessary restrictions. If treatment involves exercises that deliberately bring on feared bodily sensations, discuss medical concerns first and agree on appropriate adaptations with the treating professionals. Do not improvise such exercises from online instructions. [2]
Care intensity should reflect safety and support needs, not symptom labels alone. Possible alcohol withdrawal may require monitored medical treatment rather than a routine anxiety appointment. Ask which service can safely manage your current needs. [9]
Our guide to residential treatment versus inpatient hospital care explains why the settings are not interchangeable. For non-emergency planning, THE BALANCE's private anxiety treatment overview describes its European residential context in Switzerland and Spain. Ask directly about suitability, medical capabilities, and referral needs rather than assuming every specialist treatment is available.
Preparing for appointments and involving family
Consider bringing a one-page summary with your main concerns, medication list, previous results, and questions. Choose one or two representative episodes to describe. Record enough information to support the appointment without turning every sensation into a task to monitor. Ask your clinician what observations, if any, would actually help.
With your permission, a trusted person can help describe what they witnessed, take notes, or support follow-through. This can be especially useful after a blackout, when a witness may remember details you cannot. Their account supplements your experience rather than replacing it. You can also request time to speak privately with the clinician. [11]
Family support can begin with listening and acknowledging that symptoms are distressing. NIMH recommends honest conversation, education, and compassion when supporting someone with anxiety. A practical question is, 'Would you like help arranging an appointment or writing down your concerns?' Avoid declaring that symptoms are definitely harmless or definitely a serious disease. [10]
Follow-up, recovery, and the limits of testing
Ask for a clear follow-up plan: who reviews results, who manages anxiety treatment, and which symptoms require earlier contact. A completed emergency assessment does not replace ongoing care. New or different palpitations should be reported, particularly when your symptoms change from the pattern already evaluated. [1], [5]
Agree on recovery goals that matter to you, such as returning to appointments, sleeping more consistently, or participating in daily activities within medical advice. Track progress at planned reviews rather than requiring complete absence of bodily sensations before you resume life. Raise concerns about treatment tolerability or unresolved symptoms promptly.
There is no single test that separates every anxiety symptom from every medical cause. The sources here support clinical interviews, examination, and investigations selected for particular concerns; they do not establish a universal screening panel. Individual uncertainty may remain. A useful assessment explains that uncertainty, identifies reasonable next steps, and gives you clear instructions about when to seek help. [1], [2], [11]
YOU MAY FIND THESE HELPFUL
A useful place to start.
Assessment & Treatment Planning
ExplorePlan your stayHow Admission Works
ExploreUnderstandAnxiety
ExploreQuestions
Frequently Asked Questions
Does everyone with anxiety need thyroid testing?
No single test panel fits everyone. Thyroid testing may be appropriate when symptoms, examination findings, or history suggest thyroid disease, such as unexplained weight loss, heat intolerance, tremor, or a persistent rapid heartbeat. Ask what the test would clarify in your situation. [3]
Can panic attacks and a heart condition happen together?
Yes. Panic disorder can coexist with cardiovascular disease. A previous panic diagnosis does not make new chest pain or a changed heartbeat automatically harmless. Call 911 if you think you may be having a heart attack, even if you are uncertain. [2], [6]
Do normal blood tests prove that my symptoms are anxiety?
No. Blood tests answer particular medical questions; they do not diagnose an anxiety disorder. Diagnosis also involves your symptom pattern, history, distress, and daily functioning. Ask which possibilities the results address and whether symptoms need follow-up or a different kind of assessment. [1], [10]
Could my cold medicine or energy drink cause anxiety-like symptoms?
Some decongestants can cause palpitations, and caffeine can cause anxiety, shakiness, sleep problems, and a fast heartbeat. Bring product names and amounts to your appointment, including energy drinks, supplements, and nonprescription medicines. Do not change prescribed treatment without discussing it with your clinician. [5], [12]
Should I wait until every medical possibility is excluded before starting therapy?
Not necessarily. Once urgent concerns have been addressed, medical evaluation and anxiety treatment may proceed together. Ask your clinicians to agree on any restrictions, outstanding tests, and responsibility for follow-up. An anxiety diagnosis should reflect a clinical assessment, not simply the absence of abnormal test results. [1], [2]
What should I do if anxiety begins after stopping alcohol or a sedative?
Contact a healthcare professional promptly. Alcohol or benzodiazepine withdrawal can cause anxiety and can become dangerous. Do not attempt an unsupervised withdrawal or medication taper. Seizures, severe confusion, hallucinations, or breathing difficulty require emergency help. [8], [9]
Editorial evidence
Evidence & sources
Selected clinical guidelines, peer-reviewed research, and public-health sources used in this article.
View all 13 sourcesShow fewer sources
Clinical context
Clear information is framed around complex and co-occurring presentations.
Individual factors
Assessment remains essential because needs and risks differ from person to person.
Next steps
A confidential conversation can help clarify the most appropriate route forward.
Not sure where the situation fits?
Your admissions team


A confidential first conversation can help clarify the presentation and whether our setting is appropriate.
