Is digital melanoma painful?

It can be, especially when pressed, scraped, or broken — sensitivity and limping are common signs. Have your vet examine it and arrange any necessary tests.

What tests are needed to confirm the diagnosis?

Common tests include fine-needle aspirate cytology for an initial assessment, X-rays to evaluate bone invasion, and CT or histopathology biopsy for confirmation when needed. Discuss a testing plan with your vet.

Can surgery cure the melanoma?

If the tumour is localised and excised with adequate margins, surgery can improve local control. If invasion or metastasis is present, additional treatments and long-term monitoring may be needed.

How long is follow-up needed after surgery?

Post-operative follow-up generally involves regular check-ups of the wound and lesion site, with imaging or laboratory tests every 3–6 months. The frequency is adjusted based on individual risk.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Cutaneous & Digital Melanoma in Dogs and Cats: Symptoms, Diagnosis & Treatment [2025]

Cutaneous melanomas are often benign, but digital (toe) melanomas are frequently malignant. Biopsy is needed to determine malignancy; malignant digital tumours may require digit amputation.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap Editorial Team

Sources: ACVIM, WSAVA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek emergency care immediately

•The mass is bleeding heavily and the bleeding cannot be controlled
•Sudden severe lameness with the limb unable to bear weight
•The tumor is rapidly enlarging and the skin surface has broken down with open ulceration and bleeding

Schedule a clinic visit soon (within 24–72 hours)

•Persistent licking or frequent scratching at the lesion, but the pet is otherwise alert
•The mass is clearly painful to the touch or is affecting the pet's gait
•Noticeably reduced activity level or appetite compared to normal

01What symptoms indicate something is wrong?

Cutaneous and digital melanomas in dogs and cats typically present as localised dark or black masses, which may be painful or affect walking. Early detection helps facilitate timely workup and treatment.

A black or dark-coloured mass or plaque between the toes or on the skin
Noticeable sensitivity or pain when the lesion is touched
Limping or reluctance to bear weight due to pain or discomfort
The surface of the mass may ulcerate, bleed, crust, or break down
Noticeable changes in alertness, activity level, or appetite
Seek evaluation by a dermatology or oncology specialist promptly if a suspicious lesion is found

Seek emergency care immediately if you notice the following symptoms:

⚠️ Sudden heavy bleeding from the mass that cannot be controlled
⚠️ Severe lameness or complete inability to bear weight in a short period
⚠️ Rapid enlargement, skin breakdown, or ulceration of the tumour

02How do you assess the situation at home? Key observations and criteria for seeking emergency care

Monitoring and documenting key changes at home helps your vet assess the condition and plan further investigations.

Observe your pet's gait and note whether a specific limb is not bearing weight
Record any changes in alertness, activity level, and appetite
Monitor and record body weight trends over a short period
Note whether urination and defecation are normal or have changed
Watch for frequent scratching, licking, or biting at the lesion
Regularly photograph the lesion close-up and record walking videos; note the date the lesion was first found

03How will the vet make a diagnosis? Common diagnostic tests

At the clinic, the vet will combine a physical examination with imaging and laboratory tests to evaluate and stage the disease, referring for advanced imaging or biopsy if needed.

Physical examination

localise the mass and assess its size and fixation

Cytology (fine-needle aspirate) as an initial assessment of lesion type

X-rays to evaluate whether adjacent bone or joints are involved

CT or MRI to assess the extent of local invasion or distant metastasis

Haematology and biochemistry to evaluate overall health and surgical risk

04What are the treatment and aftercare options? Medications, dietary adjustments, and care guide

Treatment depends on the extent and invasiveness of the tumour. Surgical excision is most common and may be combined with systemic therapy. Long-term follow-up is required to monitor for recurrence or metastasis.

Surgical excision is a common local control method; the extent of resection is determined by the individual case
Some cases may require evaluation for adjuvant chemotherapy or immunotherapy
Regular post-operative follow-up is needed to check wound healing and monitor for new lesions
Long-term monitoring may include imaging and blood tests to detect recurrence
Pain medication and supportive care are used to manage symptoms and improve quality of life
Dietary management and weight control support post-operative recovery and overall health
Discuss an individualised treatment plan at a specialist centre with imaging and oncology capabilities

05What should you prepare before the visit? Key information to help the vet quickly understand your pet's history

Take close-up photos and walking videos (from the side and front) of the lesion for comparison

Note when the lesion was first noticed and any changes in the timeline

Record the frequency of scratching and licking, and any bleeding or discharge

List any recent changes in diet, medications, or environment

Bring existing test results or imaging if available for reference

Use a secure carrier or lead to keep your pet calm and prevent injury

Call ahead to book a specialist appointment and briefly describe the main concern

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.