SkinScan

An online dermatologist can provide a reliable preliminary assessment of a mole or rash from photos, but they cannot deliver a definitive diagnosis of skin cancer like melanoma without further clinical testing (dermoscopy and/or biopsy) [1][3]. While photos allow board-certified dermatologists to identify suspicious lesions with significant experience, definitive diagnosis of malignant moles requires tools that photos cannot replicate: Assessment Aspect Photo-Based Online Review In-Office/Definitive Diagnosis Primary Purpose Triage & Preliminary Screening [3] Confirmed Diagnosis [1] Key Tool Smartphone photos [3] Dermoscope (magnified skin view) [8] Critical Limitation Cannot see subsurface structures [1] Examines cellular/genomic markers [2] Final Step for Cancer Recommend biopsy if suspicious [1] Biopsy (tissue removal) [1] Specific Recommendations for Reliable Care: Instead of relying solely on AI apps (which have low sensitivity in real practice, e.g., 28% mean sensitivity for some apps) [5], use services that pair photo review with medical-grade testing: DermatologistOnCall (using DermTech Melanoma Test): This service combines visual review by experienced dermatologists with the DermTech Melanoma Test, a non-invasive genomic test with >99% negative predictive value (meaning a negative result is 99% accurate in ruling out melanoma) [2]. Scanoma: Connects you directly with qualified dermatologists for expert photo review, though a biopsy may still be required for confirmation if cancer is suspected [3]. Avoid AI-only apps: Apps like "SkinScan" failed to detect any malignant cases in some studies, and "SkinVision" has variable sensitivity (41–83%) [1][5]. Bottom Line: If you have a mole that concerns you, an online dermatologist's photo review is a valuable first step to determine if you need urgent care, but do not rely on it as the sole method of detection. A definitive diagnosis of skin cancer requires a biopsy [1]. Always consult a dermatologist if a mole looks different, grows quickly, or changes in shape/color [6].

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