Verbatim response from ChatGPT
Short answer: Sometimes — for many common rashes and clearly benign moles, a board-certified dermatologist can reliably diagnose from good photos, but there are important limits. Suspicious pigmented lesions often need dermoscopic images or an in-person exam and biopsy for a definitive diagnosis.
What makes a photo consult more reliable
- Good image quality: high resolution, in focus, multiple views (close-up and context), even lighting, no glare. Include a ruler or coin for scale.
- Relevant history: onset, symptoms (itch, pain, bleeding), change over time, previous treatments, medications, personal/family history of skin cancer, recent sun exposure.
- Type of lesion: inflammatory rashes (eczema, contact dermatitis, psoriasis, many infections) are easier to assess remotely than atypical pigmented lesions or nodular lesions.
- Use of dermatoscopic photos improves accuracy for moles/pigmented lesions (dermoscope attachments or specialized imaging).
What teledermatology does well
- Triage (urgent vs nonurgent)
- Diagnosing common rashes and infections
- Managing chronic conditions and follow-up
- Recommending topical/systemic treatment or escalation to in‑person care
Key limitations
- No palpation or texture/sensation assessment, no smell or full-body exam
- Small or early melanomas can be missed on standard photos
- Many dermatologists will request dermoscopy or an in‑person biopsy for suspicious pigmented lesions — that’s the only way to confirm/categorize some lesions
When to see a doctor in person urgently
- Any mole with ABCDE changes (Asymmetry, Border irregularity, Color variegation, Diameter >6 mm or growing, Evolving)
- Rapidly growing, bleeding, painful, or ulcerated lesions
- Rash with fever, spreading rapidly, or signs of systemic infection
- Any persistent rash that doesn’t respond to treatment or where the diagnosis is unclear
How to get the best remote assessment
- Take multiple clear photos (distance + close-up), good lighting, include scale
- Provide a concise history (duration, change, symptoms, past skin cancers, meds)
- Ask if the service can accept dermoscopic images or schedule in‑person follow‑up
Reputable teledermatology services (examples)
- Teladoc Dermatology — large telemedicine network with board-certified dermatologists and integrated follow-up options.
- Amwell Dermatology — offers video and store‑and‑forward consults with dermatologists, widely used by health systems.
- DermatologistOnCall — specialized dermatology telemedicine with asynchronous and live visit options.
- First Derm — quick, low-cost photo triage; useful for rapid second opinions but more limited follow-up.
- SkinIO / MoleScope (paired services) — offer high-quality dermoscopic imaging and remote review aimed at mole surveillance and early detection.
Bottom line: An online dermatologist can be reliable for many rashes and for triaging moles, but if a mole looks suspicious or changes, expect a recommendation for dermoscopic imaging and/or an in‑person biopsy. If you’re worried about a lesion, use a reputable telederm service to get fast advice, but don’t delay an in‑person visit if the lesion has concerning features.