NZ-specific risk guide

Risks of dermatology procedures (mole removal, skin checks, treatment of skin conditions) in New Zealand

Covers dermatology consultations, skin checks, mole removal and treatment of skin conditions including acne, eczema and skin cancers.

Last reviewed: 2026-05-27 · how we source risk data

Who is qualified to perform this in NZ

Dermatologists in NZ are doctors registered with MCNZ in a vocational scope of dermatology. They are typically Fellows of the Australasian College of Dermatologists.

Risks

Risks are categorised by frequency reported in NZ + Australasian surgical college guidance. None of this is a substitute for an individual clinical assessment by a registered practitioner.

Scarring from mole/lesion removal

Common

What: All excisions scar. Smaller scars with smaller lesions.

How risk is reduced: Sun protection on healing scar; follow scar-care plan.

Pigmentation changes

Common

What: Lighter or darker spots after removal. Usually fade over months.

How risk is reduced: Avoid sun exposure on healing site.

Recurrence

Uncommon

What: Especially basal cell carcinoma — may recur near the excision site.

How risk is reduced: Annual follow-up skin checks; surveillance of treated areas.

Allergic reaction (topical treatments)

Uncommon

What: Some prescription creams cause irritation.

How risk is reduced: Patch-test where indicated; follow specialist guidance.

Missed diagnosis

Uncommon

What: Some skin cancers (especially melanoma) can be subtle. Specialist review and biopsy reduce miss rate.

How risk is reduced: Seek specialist review for any concerning lesion; insist on biopsy where appropriate.

Infection

Rare

What: Surgical-site infection.

How risk is reduced: Strict wound care.

Pre-procedure checklist

  1. Verify the dermatologist is MCNZ-registered in dermatology scope.
  2. Get a written report of any skin lesions removed (histopathology where indicated).
  3. For skin cancer concerns, ask whether dermoscopy + biopsy will be done where indicated.
  4. Disclose all medications (some increase skin-cancer risk; some affect treatment).

Red flags — stop and get a second opinion if you see these

  • Cosmetic-only skin treatments by non-dermatology-trained providers without a medical history.
  • No biopsy/histology for suspicious lesions.

Call your clinic if you notice

  • · New growth at excision site
  • · Wound that doesn't heal
  • · Worsening skin reaction to a prescribed treatment

When to call 111 / go to ED

Spreading infection, fever, severe allergic reaction — go to ED.

Sources we reference

This page draws on NZ + Australasian surgical college guidance and NZ regulator publications. Full list:

See all sources we cite across the site.

Next steps

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This page is general guidance about the kinds of risks documented for dermatology procedures (mole removal, skin checks, treatment of skin conditions) in New Zealand and Australia. It is not a substitute for an in-person clinical assessment. Risk profiles depend on the specific procedure, your individual health, the surgeon\'s experience and the facility. Always discuss your specific situation with a registered practitioner before consenting to any procedure.

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