Dr. Ruth Margaret MacSween

Dr. Ruth MacSween diagnoses and treats a wide range of skin, hair, and nail conditions, including:

Skin Cancers, Precancerous Lesions & Benign Growths

• Dysplastic Nevi (Atypical Moles): Moles that look different from common moles (larger, irregular borders, varied color) and may have a higher risk of developing into melanoma. Often require monitoring or biopsy.
• Skin Cysts (Epidermoid, Pilar, Sebaceous): Benign, sac-like growths under the skin containing fluid or semi-solid material. May become inflamed or infected and sometimes require removal.
• Actinic Keratosis (Solar Keratosis): A rough, scaly patch on sun-exposed skin that is considered precancerous and can sometimes progress to squamous cell carcinoma if left untreated.

Nail Disorders (Onychopathies)

• Paronychia (Acute & Chronic): Inflammation or infection of the skin fold around the fingernails or toenails, causing redness, swelling, and pain. Can be acute (bacterial) or chronic (often fungal or irritant-related).
• Ingrown Toenails (Onychocryptosis): A condition where the corner or side of a toenail grows into the soft flesh, causing pain, redness, swelling, and potential infection.

Inflammatory & Immune-Mediated Skin Conditions

• Dermatitis Herpetiformis: An intensely itchy, blistering rash often associated with celiac disease (gluten sensitivity), typically appearing on elbows, knees, buttocks, and scalp.
• Dermatomyositis: An inflammatory disease marked by muscle weakness and a distinctive skin rash, often on the face, eyelids (heliotrope rash), knuckles (Gottron's papules), and chest.
• Lichen Planus: An inflammatory condition that can affect the skin, hair, nails, and mucous membranes (mouth, genitals), causing purplish, itchy, flat-topped bumps on the skin or lacy white patches in the mouth.

This list is not exhaustive. For personalized advice regarding your specific dermatological condition, please consult with Dr. Ruth MacSween.

• Psoriasis & Psoriatic Arthritis Management (Topical, Phototherapy, Systemic, Biologics, JAK inhibitors): Comprehensive management of psoriasis (plaque, guttate, pustular, erythrodermic) and associated psoriatic arthritis, using topical treatments, narrowband UVB or PUVA phototherapy, oral systemic medications (e.g., methotrexate, cyclosporine), and advanced biologic therapies or JAK inhibitors targeting specific immune pathways.
• Sclerotherapy for Spider & Small Varicose Veins: Injectable treatment (e.g., with polidocanol or hypertonic saline) to eliminate small, unsightly veins (telangiectasias and reticular veins) primarily on the legs.
• Cryosurgery (Liquid Nitrogen Treatment for Pre-cancers & Benign Lesions): Application of extreme cold (liquid nitrogen) to destroy benign (e.g., warts, seborrheic keratoses) or precancerous skin lesions (e.g., actinic keratoses).
• Teledermatology Consultations (for select conditions & follow-ups): Remote dermatological consultations using secure digital imaging and communication technologies for initial assessment of certain conditions or for follow-up care, enhancing accessibility.
• Patch Testing for Allergic Contact Dermatitis (Standard & Expanded Panels): Diagnostic procedure to identify specific allergens causing contact dermatitis by applying small amounts of common (and sometimes occupational or specialized) allergens to the skin.
• Chemical Peels (Superficial, Medium, Deep - Glycolic, Salicylic, TCA, Phenol): Application of chemical solutions to exfoliate the skin and improve texture, tone, and appearance by treating acne, sun damage, pigmentation, and fine lines. Peel depth varies by agent and concentration.
• Laser & Light-Based Treatments (IPL, Fractional Lasers, Ablative/Non-Ablative Resurfacing, Vascular Lasers, Pigment Lasers): Utilizing various laser (e.g., CO2, Erbium, Pulsed Dye, Nd:YAG, Alexandrite, Picosecond) and Intense Pulsed Light (IPL) technologies for skin rejuvenation, wrinkle reduction, scar improvement, hair removal, treatment of vascular lesions (e.g., spider veins, rosacea, port-wine stains), and pigmented lesions (e.g., sun spots, tattoo removal).

Note: This list provides a general overview of medical and potentially some cosmetic services. Treatment plans are highly individualized. Discuss with Dr. MacSween for care relevant to your specific condition. Coverage for services varies; medically necessary treatments are typically covered by provincial health plans, while cosmetic procedures are usually self-pay.

All medical and surgical services (if applicable) are provided in accordance with the standards of practice set by the College of Physicians and Surgeons of Ontario (CPSO) and relevant dermatological care guidelines. Contact the clinic or your referring physician regarding new patient intake and referral processes.

Mount Sinai Hospital in Kingston is situated in the Downtown Kingston, Queen's University Area, Sydenham Ward neighborhood. The hospital's dermatology unit is easily accessible via Via Rail Station, which provides convenient rail access for patients traveling from surrounding regions. Public transit options, including Kingston Transit, serve the hospital, allowing patients to reach the facility comfortably. The hospital's dermatology department is housed within a modern, accessible building; the facility is wheelchair accessible to accommodate patients with mobility needs. Paid parking options are conveniently located nearby, offering easy access for those arriving by car. The hospital serves as a key medical facility in Kingston, providing specialized dermatological services within a comprehensive healthcare environment.

Are consultations and dermatological treatments with Dr. MacSween, a Dermatologist, covered by Ontario Health Insurance Plan (OHIP) in ON?

Medically necessary consultations with a licensed Dermatologist like Dr. MacSween, diagnostic procedures (e.g., skin biopsies), and treatments for provincially insured skin conditions (e.g., psoriasis, severe eczema, skin cancer, infections) are generally covered by Ontario Health Insurance Plan (OHIP) in ON when a referral from a family doctor is in place. Purely cosmetic procedures (e.g., Botox for wrinkles, most laser hair removal, fillers for aesthetic enhancement) are typically not covered and are self-pay. It's crucial to discuss coverage specifics for any proposed treatment with Dr. MacSween's office or Ontario Health Insurance Plan (OHIP) beforehand, especially if there's a potential cosmetic component.

Do I need a referral to see Dr. MacSween, a Dermatologist?

Yes, for medically necessary dermatological care covered by the provincial health plan, a referral from your family physician or another specialist (e.g., an ER doctor for an acute issue) is almost always required to see a Dermatologist such as Dr. MacSween. This ensures coordinated care and that your visit is appropriate for specialist assessment. Some dermatologists may offer consultations for uninsured cosmetic services without a referral, but these would be a direct cost to you. Always check with the clinic regarding their specific referral policy.

What does a Dermatologist like Dr. MacSween specialize in?

A Dermatologist, such as Dr. MacSween, is a medical doctor with highly specialized training in diagnosing and treating over 3,000 conditions affecting the skin, hair, and nails in patients of all ages – from newborns to seniors. This includes a wide spectrum of diseases from common issues like acne, eczema, and psoriasis, to more complex conditions like skin cancer, autoimmune skin disorders (e.g., lupus, pemphigus), severe allergic reactions, and genetic skin diseases. She is a Dermatologist specializing in the comprehensive medical and surgical care of skin, hair, and nail conditions. Dr. MacSween offers various medical, surgical, and potentially cosmetic treatments depending on their practice focus.

How often should I see a Dermatologist like Dr. MacSween for skin cancer screening?

The recommended frequency for skin cancer screenings by a Dermatologist like Dr. MacSween varies based on your individual risk factors. These include a personal or family history of skin cancer (especially melanoma), having many moles (e.g., >50) or atypical moles, fair skin that burns easily, a history of excessive sun exposure or tanning bed use, or a suppressed immune system. Your family doctor can assess your risk, or Dr. MacSween can provide a personalized recommendation after an initial consultation. Regardless of professional check-ups, performing monthly self-skin exams to monitor for any new or changing lesions (using the ABCDEs of melanoma as a guide) is crucial for early detection.

What are some common medical procedures a Dermatologist like Dr. MacSween performs?

Dermatologists like Dr. MacSween perform a variety of diagnostic and therapeutic procedures. Common medical procedures include skin biopsies (punch, shave, or excisional) to diagnose conditions, cryosurgery (freezing with liquid nitrogen) for warts or precancerous spots (actinic keratoses), surgical excision of skin cancers or benign lesions like cysts and atypical moles, intralesional injections (e.g., for keloids or alopecia areata), and prescribing specialized topical or oral medications (including biologics or immunosuppressants for complex conditions). Many dermatologists also offer phototherapy. Dr. MacSween can discuss specific procedures relevant to your condition and may have subspecialty interests influencing the range of procedures offered.

When should someone consider seeing a Dermatologist like Dr. MacSween?

A referral to a Dermatologist like Dr. MacSween is often recommended by a family physician for: any new or changing moles or skin growths; persistent or severe skin rashes (e.g., eczema, psoriasis) not responding to initial treatments; severe or cystic acne; chronic hives; significant hair loss or scalp disorders; problematic nail conditions (e.g., persistent fungal infections, unusual changes); suspected skin infections; or for expert skin cancer screening, especially if you have risk factors like a personal or family history of skin cancer, numerous moles, or significant sun exposure. Early consultation can be key for effective management and diagnosis.

Mount Sinai Hospital
3rd Floor, Room 3-913, 163 Brock Street, Ontario Power Generation Building
Kingston, ON K7L 1S2

Phone: (613) 549-6660 | Fax: (613) 547-2079

The facility is wheelchair accessible.

Dr. MacSween is a licensed Dermatologist regulated by the College of Physicians and Surgeons of Ontario (CPSO) under the Regulated Health Professions Act, 1991 and Medicine Act, 1991 in ON. A referral from a family physician is typically required for consultations with Dr. MacSween for medically necessary services covered by the provincial health plan. Cosmetic consultations may have different requirements.

Verify registration with the College of Physicians and Surgeons of Ontario (CPSO): https://doctors.cpso.on.ca/DoctorDetails/MacSween-Ruth-Margaret/0156078-74503