Asynchronous telehealth is a form of virtual care where you and your provider exchange medical information at different times, rather than speaking in real time. Instead of a live video call or phone appointment, you submit your symptoms, photos, or health history through a secure platform, and a provider reviews everything later, then sends back a diagnosis or treatment plan. The technical term for this is “store-and-forward” technology: your information is stored, then forwarded to a clinician who responds when their schedule allows.
How It Differs From a Live Video Visit
The most familiar type of telehealth is synchronous care, where you and a provider are on a video call or phone call at the same time. Asynchronous care removes that requirement entirely. You don’t need to schedule an appointment or block out time in your day. You fill out a structured questionnaire, upload photos if needed, and submit. A provider picks it up, reviews it, and responds, sometimes within hours, sometimes the next business day.
In practice, many platforms blend both approaches. You might complete an online intake form (the asynchronous part), then follow up with a brief chat or message exchange with your provider to clarify details or discuss a treatment plan. Some states legally require a real-time conversation before a prescription can be written, which means the asynchronous portion serves as groundwork rather than the entire visit. In states without that requirement, the whole interaction can happen without a single live conversation.
Where It’s Used Most
Dermatology and primary care dominate asynchronous telehealth. A systematic review of 104 studies found that each accounted for about 27% of all published research on the topic, far ahead of any other specialty. Dermatology is a natural fit because so much of diagnosis depends on visual information. You photograph a rash, mole, or skin lesion, upload it with a description, and a dermatologist evaluates it without needing to see you in person.
Primary care uses asynchronous visits for straightforward problems like urinary tract infections, sinus infections, prescription refills, and follow-up check-ins for chronic conditions. Psychiatry ranked third in the research (about 6% of studies), though researchers have noted this seems low given how well mental health questionnaires translate to an asynchronous format. Beyond those three, the model has been used across a wide range of specialties: ophthalmology, cardiology, nutrition counseling, speech therapy, rheumatology, urology, and even emergency medicine triage.
The range of professionals involved is broader than you might expect. Nurses, nurse practitioners, therapists, dietitians, pharmacists, and dentists all use asynchronous platforms, though physicians still make up the majority of providers in published studies.
What a Visit Actually Looks Like
A typical asynchronous visit starts with you logging into a secure platform or app. You answer a series of structured questions about your symptoms, medical history, current medications, and allergies. For skin conditions, you upload photos. For mental health, you might complete standardized screening questionnaires. The platform guides you through the process so the provider gets the information they need without a back-and-forth conversation.
Once you submit, a provider reviews your case. Research suggests these reviews take between 2.5 and 10 minutes on the clinician’s end, roughly equivalent to a phone or in-person appointment. After review, you receive a message with a diagnosis, treatment recommendation, or a request for more information. If a prescription is appropriate (and allowed in your state through this format), it can be sent directly to your pharmacy.
How Outcomes Compare to In-Person Care
The clinical outcomes from telehealth, including asynchronous models, are broadly comparable to in-person visits for many conditions. A large systematic review published in Nature found that differences in healthcare utilization and clinical outcomes between telehealth and in-person care were generally small or not clinically meaningful. Patients using telehealth had lower rates of missed appointments and better medication adherence compared to those seen in person. The tradeoff: telehealth patients were less likely to have up-to-date lab work or other diagnostic testing, which makes sense given the lack of physical access to a clinic.
For chronic conditions managed on an ongoing basis, telehealth performed similarly to in-person care in terms of emergency department visits. For acute conditions, the picture was more mixed. One large study of over 600,000 patients found slightly higher emergency department visit rates for acute conditions managed via telehealth, but similar or lower rates for chronic conditions. The takeaway is that asynchronous telehealth works well for conditions that don’t require a physical exam or urgent decision-making, but isn’t a substitute for hands-on evaluation when the situation calls for it.
The Impact on Provider Workload
Asynchronous telehealth doesn’t automatically make providers more efficient. Six studies in a systematic review of general practice found that it added to clinical and administrative workload by creating an additional stream of incoming requests. Some providers reported that patients used the system as a shortcut to get faster access to other services, which created more work rather than less. Poor platform design and patients not following the system’s intake steps correctly also slowed things down.
On the positive side, providers found asynchronous visits convenient and reported saving time on administrative tasks. One study found that general practitioners estimated asynchronous consultations could replace 55% to 88% of face-to-face visits. Whether the added volume of asynchronous requests is offset by reduced demand for in-person and phone appointments remains an open question.
State Laws and Prescribing Limits
One of the biggest practical limitations of asynchronous telehealth is that many states restrict what can happen without a real-time interaction. Most states consider an online questionnaire alone as insufficient to establish a legitimate patient-provider relationship, which is typically required before a provider can write a prescription.
The specifics vary widely. Arkansas requires that a physician-patient relationship be established before telemedicine services can be delivered, and explicitly states that a patient completing a medical history online does not qualify. Colorado and West Virginia say that treatment based solely on an online questionnaire does not meet the standard of care. Rhode Island goes further, stating that asynchronous evaluation without a real-time exchange is simply “not appropriate.” Mississippi allows store-and-forward technology to enhance but never replace real-time provider-patient interaction.
If you’re using an asynchronous platform, the platform itself typically handles these requirements behind the scenes. In states with stricter rules, you’ll be prompted to schedule a brief phone or video call before receiving a prescription. In more permissive states, the entire process may stay asynchronous. Either way, this is something the platform manages for you based on where you live.
Privacy and Security Requirements
All telehealth services, including asynchronous platforms, must comply with federal health privacy rules. Providers and the technology vendors they use are required to protect your health information, and vendors must sign formal agreements committing to those standards. In practical terms, this means a legitimate asynchronous telehealth platform uses encrypted messaging and secure servers. Regular email, standard text messaging, and consumer apps like FaceTime are not designed to meet these requirements, which is why dedicated telehealth platforms exist.
Who Benefits Most
Asynchronous telehealth is particularly useful if you have a predictable, visually identifiable, or low-complexity health concern. Skin rashes, acne, medication refills, simple infections, and mental health check-ins are strong use cases. It’s also valuable if your schedule makes it difficult to attend appointments during business hours, if you live far from a specialist, or if you simply prefer written communication over phone or video calls.
It’s less well suited for conditions that require a physical examination, urgent symptoms that need immediate attention, or complex diagnostic situations where a provider needs to ask follow-up questions in real time. Many platforms recognize this and will redirect you to a synchronous visit or in-person care if your intake responses suggest your situation requires it.
The broader telehealth market, which encompasses both synchronous and asynchronous models, was valued at roughly $42 billion in 2025 and is projected to more than double by 2034. Hybrid models that combine asynchronous intake with live follow-up conversations are becoming the standard approach, and over two-thirds of platforms now use automated triage systems to route patients to the right type of visit from the start.