When Should You See a Dermatologist Instead of Your Family Doctor?

As of June 2, 2026.

Skin problems are one of the most common reasons Canadians book a medical appointment, and most of them are handled well in primary care. The harder question is knowing when a skin concern needs a specialist. As a family physician and co-founder of DermaDex, I see both sides of this line every week: the cases a family doctor can settle in one visit, and the ones that need a dermatologist's training, tools, and a biopsy. This guide explains where that line sits, which red flags should move you up the queue, and how referrals and wait times work in Canada. This is general information, not a diagnosis. If you have a specific concern, speak with a licensed clinician.

What is the difference between a family doctor and a dermatologist?

Short answer: A family doctor is your first point of contact for almost any skin problem and treats the large majority of them. A dermatologist is a physician with several additional years of specialty training focused only on skin, hair, and nails, and handles complex, uncertain, or serious cases.

Both are fully licensed doctors, so the difference is depth and scope. Family physicians manage a wide range of conditions across the whole body, including common skin complaints like acne, eczema, and minor infections. Dermatologists complete extra residency training and use specialized tools such as the dermatoscope, plus in-office procedures like skin biopsies and excisions, to diagnose and treat harder problems. The Canadian Dermatology Association (CDA) keeps a public directory of certified specialists and patient resources at dermatology.ca. If you want to understand how that magnified examination works, see our explainer on dermoscopy.

When should you see a dermatologist instead of your family doctor?

Short answer: See a dermatologist when a skin problem is changing, spreading, painful, or not responding to standard treatment, or when your family doctor recommends a specialist opinion or a biopsy. New or changing moles and any spot that looks suspicious for skin cancer should always be assessed promptly.

Start with your family doctor for most issues. Ask about a referral when a rash has not improved after a few weeks of treatment, when a condition keeps coming back, when symptoms affect your sleep, work, or mental health, or when the diagnosis is unclear. Certain situations warrant faster attention: a mole that has changed, a sore that will not heal, a growing or bleeding lump, or a personal or family history of melanoma. If you are worried a lesion could be cancer, read our guide on basal cell carcinoma, the most common form, and book an assessment rather than waiting.

Which skin symptoms are red flags you should not ignore?

Short answer: The clearest red flags are a new or changing mole, a sore that does not heal within a few weeks, and any growth that bleeds, itches, or grows quickly. Dermatologists and the American Academy of Dermatology (AAD) teach the ABCDE rule to spot a mole that needs urgent review.

ABCDE stands for Asymmetry, Border, Color, Diameter, and Evolving. It is a simple checklist you can use at home between professional skin checks. It does not replace a clinician's exam, but it helps you decide when to act. The AAD publishes the full method with photos at aad.org.

Letter	What it stands for	What to look for
A	Asymmetry	One half of the mole does not match the other half
B	Border	Edges are ragged, notched, scalloped, or blurred
C	Color	More than one shade, or uneven brown, black, red, white, or blue
D	Diameter	Larger than 6 mm, about the size of a pencil eraser, though some melanomas are smaller
E	Evolving	The spot changes in size, shape, or color, or starts to itch, crust, or bleed

If a spot meets one or more of these signs, do not wait for it to get worse. Sun exposure is the main preventable cause of skin cancer, and the Public Health Agency of Canada explains protection steps at canada.ca.

How do dermatologist referrals and wait times work in Canada?

Short answer: In most provinces you need a referral from a family doctor or nurse practitioner to see a dermatologist under public coverage, and wait times vary widely by region and by how urgent your case looks. Urgent cancer referrals are usually seen faster than routine cosmetic or chronic concerns.

Under plans such as the Ontario Health Insurance Plan (OHIP), a medically necessary dermatology consult is covered, but the family doctor acts as the gatekeeper who decides urgency and writes the referral. Access to that first appointment is the bottleneck. The Canadian Institute for Health Information (CIHI) reports that the share of Canadian adults with a regular primary care provider fell from 93% in 2016 to 86% in 2023, the lowest among 10 peer countries, leaving an estimated 4 million adults without one, as shown in its primary health care data. Statistics Canada found a similar gap, with about 15.8% of people aged 12 and older reporting no regular provider in its 2017 survey. Fewer family doctors means longer queues before a referral is even written.

What skin problems can your family doctor handle on their own?

Short answer: Your family doctor can manage most everyday skin conditions, including mild to moderate acne, eczema, common rashes, fungal infections, warts, and many cases of psoriasis, often without any referral at all.

Primary care is well suited to first-line treatment and follow-up. A referral is reserved for cases that are severe, unclear, or not improving. The table below shows the usual split, though every patient is different and your doctor will judge your specific case.

Skin concern	Often handled by a family doctor	Better suited to a dermatologist
Acne	Mild to moderate, first-line creams and antibiotics	Severe, scarring, or treatment-resistant acne
Eczema and common rashes	Standard cases with topical treatment	Widespread or relapsing disease not responding to treatment
A new or changing mole	Initial check and referral if needed	Dermoscopy, biopsy, and diagnosis
Suspected skin cancer	Initial assessment and urgent referral	Confirming the diagnosis and removal
Psoriasis	Mild, localized cases	Moderate to severe disease needing systemic or biologic therapy

For background on the conditions a family doctor sees most, the AAD keeps a plain-language library at aad.org. When something falls outside that everyday range, that is the moment to ask about a specialist.

How can you get a faster skin assessment in Canada?

Short answer: Teledermatology and store-and-forward photo review can shorten the wait by getting your case in front of a certified dermatologist without an in-person visit first. Services like DermaDex use secure photo submission and artificial intelligence (AI) triage to flag urgent cases sooner.

When local wait times stretch for months, a digital skin assessment is a practical option, especially for people in rural or northern communities. With store-and-forward review, your family doctor or you submit clear photos and a short history, and a specialist reviews them remotely. DermaDex connects Canadians to certified dermatologists this way and keeps all images encrypted under the Personal Health Information Protection Act (PHIPA) and related privacy law. To learn what AI can and cannot do in this setting, read how AI skin checks work. You can read more about our team on the about page, or reach us through contact if you are a patient or clinic with a question.

How do I know if I should go to a dermatologist?

Short answer: Book with your family doctor first for most skin concerns, then ask for a dermatologist referral when a problem is changing, persistent, or not responding to treatment.

Good reasons to escalate include a mole or spot that has changed in size, shape, or color, a sore that has not healed in a few weeks, a rash that keeps returning despite treatment, acne that is scarring, or a condition that is affecting your sleep, work, or confidence. A personal or family history of melanoma, many atypical moles, or a weakened immune system also lower the threshold for specialist care. If you are unsure, your family doctor can examine the area and decide whether a referral is needed. When you cannot reach a family doctor quickly, a secure teledermatology assessment can get a specialist opinion sooner. Trust your instinct: a spot that worries you is worth showing to a clinician.

What are the 5 warning signs of skin cancer to look for?

Short answer: The five warning signs follow the ABCDE rule taught by the American Academy of Dermatology: Asymmetry, Border irregularity, Color variation, Diameter over 6 mm, and Evolving change.

A mole is more concerning when one half does not match the other (Asymmetry), the edges are ragged or blurred (Border), it shows more than one color (Color), it is wider than a pencil eraser at about 6 mm (Diameter), or it changes over time or starts to itch, crust, or bleed (Evolving). Evolution is often the most important sign, so any spot that looks different from your others, the so-called ugly duckling, deserves a look. These signs apply mainly to melanoma; other skin cancers can appear as a pearly bump or a sore that will not heal. None of these signs confirm cancer on their own, but any of them is a reason to see a clinician promptly rather than waiting.

How bad does my skin need to be to see a dermatologist?

Short answer: It does not need to be severe. Persistence, change, uncertainty, or a real impact on your daily life are all valid reasons to seek dermatology care, even if the problem looks minor.

You do not have to wait until a condition is dramatic. A small but changing mole can matter more than a large but stable patch of dry skin. Reasonable triggers for a referral include a rash that has not cleared after standard treatment, acne that is leaving marks, a spot that is new or different, or symptoms that disrupt your sleep or mood. Cost and access shape this in Canada, since a medically necessary consult is publicly covered but cosmetic-only concerns usually are not. If you are not sure whether your issue qualifies, your family doctor or a teledermatology service can review it and tell you whether a specialist visit is warranted.

What is the rule of 2 in dermatology?

Short answer: There is no single official standard called the rule of 2 in dermatology. The phrase is used informally, most often as a practical reminder to get any new or changing skin lesion checked if it lasts beyond about two weeks or keeps growing.

Different clinicians use the term in different ways, so it is worth treating it as a memory aid rather than a formal guideline. A common version is the two-week rule for referral: a sore that has not healed in two weeks, or a lesion that has clearly grown over two months, deserves a professional assessment. Others use it to describe applying a topical treatment twice daily, or rechecking a worrying spot in two weeks. Because the term is not standardized, the safest approach is the underlying message: do not let a changing or non-healing skin problem drift for weeks without showing it to a clinician.

Sources

• Canadian Institute for Health Information (CIHI), Primary health care, 2023. https://www.cihi.ca/en/primary-health-care
• Statistics Canada, Primary health care providers (2017), catalogue 82-625-X. https://www150.statcan.gc.ca/n1/pub/82-625-x/2019001/article/00001-eng.htm
• American Academy of Dermatology (AAD), What to look for: ABCDEs of melanoma. https://www.aad.org/public/diseases/skin-cancer/find/at-risk/abcdes
• American Academy of Dermatology (AAD), Diseases A to Z. https://www.aad.org/public/diseases/a-z
• Canadian Dermatology Association (CDA), Public and patient resources. https://dermatology.ca/public-patients/
• Public Health Agency of Canada, Skin cancer and sun safety. https://www.canada.ca/en/public-health/services/sun-safety/skin-cancer.html