Telehealth, the delivery of health care through video visits, phone calls, secure messaging, and remote monitoring, expanded rapidly during the COVID-19 pandemic and has since become a routine part of care for many people. It can save time, reduce travel, and improve access, particularly for people in rural areas or with mobility challenges. It also has limits. This guide explains how telehealth works, what research shows about its effectiveness, and how to get the most from a virtual visit.
What Is Telehealth?
Telehealth is a broad term that includes:
- Live video visits with a clinician.
- Telephone consultations.
- Secure messaging through patient portals.
- Remote patient monitoring, in which devices such as blood pressure cuffs or glucose monitors send data to a care team.
- Store-and-forward services, such as sending photos of a skin rash for a dermatologist to review.
- Telerehabilitation, including guided physical therapy at home.
What the Research Shows
A systematic review of teleconsultations in primary care found that telephone and video consultations were as effective as face-to-face visits for improving clinical outcomes in adults attending primary care and mental health services. Patient satisfaction was high, though higher discontinuation rates suggested telehealth may not suit every patient (Carrillo de Albornoz et al., 2022).
A systematic review of patient satisfaction with telehealth identified improved outcomes, ease of use, low cost, better communication, and reduced travel time as the factors most often associated with satisfaction (Kruse et al., 2017).
In physical therapy, a randomized trial published in The Lancet found that telerehabilitation consultations for chronic knee pain were non-inferior to in-person physiotherapy, meaning they performed about as well (Lancet 2024). In emergency care, telehealth has been used to connect rural emergency departments with specialists (J Med Internet Res 2021).
Where Telehealth Works Well
- Mental health care: Therapy and psychiatric follow-up are well suited to video, and evidence supports their effectiveness.
- Chronic disease management: Follow-ups for conditions such as high blood pressure and diabetes, especially with home monitoring. A meta-analysis found digital health interventions improved blood pressure control and medication adherence in people with hypertension (J Hypertens 2024).
- Medication reviews and refills.
- Reviewing test results.
- Minor conditions such as some rashes, allergies, and uncomplicated urinary symptoms, depending on the patient.
- Rehabilitation and exercise programs.
Where In-Person Care Is Still Needed
Telehealth cannot replace a hands-on examination, imaging, lab work, or procedures. In-person care is typically needed for:
- Emergencies such as chest pain, severe shortness of breath, stroke symptoms, or serious injuries (call emergency services)
- Conditions requiring physical examination, such as abdominal pain or ear exams in some cases
- Vaccinations, many screening tests, and procedures
- New or complex symptoms where a full assessment is important
Many health systems now use a hybrid approach, combining virtual and in-person visits based on what each situation requires.
Benefits of Telehealth
- Convenience: Less travel and waiting time, and less time off work.
- Access: Easier access for people in rural areas, people with disabilities, and caregivers.
- Continuity: Easier follow-up and more frequent check-ins for chronic conditions.
- Reduced exposure: Less contact with other sick patients in waiting rooms.
- Environmental benefits: Reduced travel emissions.
Challenges and Limitations
- Digital divide: Not everyone has reliable internet, a suitable device, or comfort with technology. Older adults, low-income households, and rural residents may be disproportionately affected.
- Missed findings: Some signs can only be detected in person.
- Privacy: Visits should use secure platforms, and patients should find a private space.
- Licensing and insurance: Rules about cross-state care and reimbursement vary and can change.
- Fragmented care: Using multiple direct-to-consumer telehealth services can lead to gaps if records are not shared with your regular clinician.
How to Prepare for a Telehealth Visit
- Test your technology: Check your device, camera, microphone, and connection beforehand.
- Find a quiet, private, well-lit space.
- Prepare a list of symptoms, questions, and current medications, including supplements.
- Have measurements ready if possible, such as temperature, weight, or blood pressure.
- Have your pharmacy information available.
- Know the follow-up plan: Ask what to do if symptoms worsen and whether an in-person visit is needed.
Telehealth for Mental Health
Mental health care has been one of telehealth’s biggest success stories. Many people find it easier to attend therapy from home, which can reduce missed appointments and the stigma some feel about visiting a clinic. Video and phone-based therapy have shown outcomes similar to in-person sessions for many conditions. People in crisis, however, need immediate help through emergency services or a crisis line rather than a scheduled virtual visit.
Choosing a Telehealth Service
When possible, use telehealth through your regular clinician or health system so your records stay connected. If using a direct-to-consumer service, check that clinicians are licensed in your state or country, understand the costs, ask how records are shared, and be cautious of services that prescribe medications quickly with minimal assessment.
Remote Monitoring and Wearables
Remote patient monitoring uses connected devices to track health data at home. For example, home blood pressure monitoring combined with clinician support can help people reach blood pressure goals. Consumer wearables can also share data with care teams, although their accuracy varies and not all data is clinically useful.
The Future of Virtual Care
Telehealth is likely to remain a permanent part of health care, increasingly combined with in-person care in hybrid models. Ongoing priorities include closing the digital divide, protecting privacy, integrating data from home devices, and ensuring that convenience does not come at the expense of quality.
The Bottom Line
Telehealth can be as effective as in-person care for many primary care, mental health, and follow-up visits, while saving time and improving access. It is not suitable for emergencies or for problems that require a physical exam or tests. Used thoughtfully, ideally through your regular care team, telehealth is a valuable tool alongside traditional visits.
Key takeaways:
- Research shows telehealth can match in-person care for many primary care and mental health needs.
- It works best for follow-ups, mental health, chronic disease management, and minor issues.
- Emergencies and conditions needing physical exams require in-person care.
- Prepare in advance and keep your regular clinician informed.
This article is for general information and is not a substitute for advice from a qualified healthcare professional.