What We Do

We are an academic tertiary referral center whose dermatologists are all board certified by the Royal College of Physicians and Surgeons of Canada. We specialize in the medical treatment of dermatological conditions such as:

  • Psoriasis
  • Eczema
  • Lupus
  • Contact Dermatitis
  • Autoimmune blistering diseases: pemphigus vulgaris and bullous pemphigoid
  • Photosensitivity Disorders
  • Skin conditions resulting from rheumatologic diseases such as lupus, scleroderma, and vasculitis
  • Skin conditions resulting from immune suppression such as organ transplantation and HIV
  • Vitiligo
  • Hidradenitis suppurativa
  • Moles
  • Rashes
  • Seborrheic keratosis (non-cancerous skin growths)

We perform or refer for surgical interventions and we perform photopatch testing when required


1 in 6 Canadians will be diagnosed with skin cancer in their lifetime and each year 85,000 Canadians will be diagnosed with skin cancer. All Canadians with risk factors for skin cancer should be checked by their family doctor who will then refer to a dermatologist if there are any concerns. Practice sun and skin awareness. Perform regular self-checks so that you are familiar with your skin. That way you’ll notice changes. Then, report them to your doctor without delay.

Promptly show your doctor any:

  • Suspicious skin area
  • Sore that doesn’t heal
  • Change in a mole or freckle

The Dermatologists at the Toronto Western Hospital are specialized in diagnosing and treating all forms of skin cancer as well as the skin needs of patients with other forms of cancer and its treatment:

  • Precancers (actinic keratosis and Bowen’s disease)
  • Lymphoma
  • Basal cell carcinoma
  • Melanoma
  • Squamous cell carcinoma
  • Rare skin cancers
  • High-risk skin cancer
  • Patients at high risk for developing skin cancer (due to immunosuppressant therapy or other factors)

We also work closely with UHN oncologists to provide treatments for skin conditions resulting from any type of cancer:

  • Skin, hair, and nail changes due to cancer treatment
  • Radiation dermatitis
  • Skin infections or side effects due to cancer treatment


At our clinic, we offer the following:

Phototesting and photopatch testing are done to investigate photosensitivity disorders. We are able to refer patients to phototherapy if it is required.

How to Prepare

Learn more about what you can expect when you have a clinic appointment.

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 Meet Our Team

​Division Director: Dr. Cheryl Rosen

​Staff Physicians or Specialists​

Dr. Renita Ahluwallia
Alternate Contact
Phone: 416 323 7546
Fax: 416 323 6236

Dr. Erin Dahlke
Alternate Contact
Phone: 416 323 7546
Fax: 416 323 6236

Dr. Phillip Doiron
Alternate Contact
Phone: 416 323 7546
Fax: 416 323 6236

Dr. Eric Eisenberg
Alternate Contact
Phone: 905 896 1515

Dr. Nazli Ghiasi
Alternate Contact
Phone: 905 274 9999
Fax: 905 274 9991

Dr. Sameh Hanna
Alternate Contact
Phone: 416 922 9620
Fax: 416 922 4358

Dr. Charles Lynde
Alternate Contact
Phone: 905 471 5022
Fax: 905 471 1878

Dr. Sanjay Siddha
Alternate Contact
Phone: 905 883 7997
Fax: 905 883 7994

 Am I at Risk?

Inherited risks

  • Red hair and freckles albinism
  • More than 50 moles
  • Family history of melanoma
  • Genetic syndromes that make you sensitive to the sun

Environmental exposures

  • Too much sun exposure
  • Frequent trips to the tanning salon
  • One or more blistering sunburn(s)

Personal history of pre-cancerous conditions

  • Actinic keratosis
  • Multiple dysplastic nevi (unusual moles)
  • Personal skin cancer history
  • Basal and squamous cell cancer

Prior treatment

  • Radiation treatment
  • Immunosuppressive treatment
  • Other cancer treatments that increase risk