Private Dermatologist Clinic of Montreal

The skin is the human body’s largest organ and it plays a critical role in our health. It is what we present to the world and protects us from the environment. Our private dermatologist, Dr. Joseph Doumit is a double board certified private dermatologist by the Royal College of Physicians and Surgeons and American Board of Dermatology. He specializes in diseases of the skin, hair and nails in both adults and children. His medical dermatology services include checking moles and other skin lesions to managing the most severe skin conditions. Dr. Doumit is also a surgical dermatologist and specializes in removing benign growths (moles, cysts, lipomas…) and skin cancers (Melanoma, Basal cell carcinoma, Squamous cell carcinoma…).

No matter what your medical dermatological needs, you may request a consultation with our private dermatologist Dr. Joseph Doumit with or WITHOUT a referral.


Acne is a common skin condition that affects most people at some point in their lives. A complex interaction between hormones, bacteria in the hair folllicle unit, oil (sebum) production, and/or obstruction of the follicle opening (comedogenesis) leads to formation of acne. It consists of spots and painful bumps on the skin. It is most noticeable on the face, but can also appear on the back, shoulders and buttocks. Severe acne can cause scarring. Treatments range from gentle washes, dietary changes, and topical preparations, all the way up to more powerful light treatments and oral medications. After a thorough consultation, Dr. Doumit will evaluate your acne and estabish an individualized treatment plan.

Hair loss (Alopecia)

Alopecia or hair loss can affect just your scalp or your entire body. Anyone – men, women and children can experience hair loss. It can be the result of heredity, hormonal changes, medical conditions or medications. It may present as hair shedding, poor hair quality, hair thinning or bald areas. There may be associated scalp disease or scarring. Depending on your type of hair loss, blood test, scalp biopsy and/or light microscopy may be needed to establish diagnosis. The goals of treatment are to promote hair growth and slow hair loss. Treatments may include medications, hair transplant surgery or laser therapy. A combination of these approaches may be needed in order to get the best results. During your consultation, a full diagnostic and treatment plan will be established for your specific condition.


Rosacea is a common skin condition of unknown cause, but it could be due to some combination of hereditary and environmental factors. Rosacea causes redness in your face and often produces small, red, pus-filled bumps. Over time, the redness may become more intense and small blood vessels may become visible. Rosacea can cause the nose to take on a bulbous, swollen appearance called rhinophyma. A number of factors can trigger or aggravate rosacea such as sunlight, hot baths, alcohol, hot foods or beverages, spicy foods, temperature extremes, stress and strenuous exercise. If left untreated, rosacea tends to worsen over time. Treatment methods vary because the signs and symptoms of rosacea vary from person to person. Treatments range from topical preparations, to oral medications or laser treatments.

Squamous cell carcinoma

Squamous cell carcinoma (SCC) is a common type of skin cancer that most often results from prolonged exposure to ultraviolet (UV) radiation, either from sunlight or from tanning beds or lamps. SCC are usually found on sun-exposed sites, such as the scalp, the backs of the hands or the ears. But squamous cell carcinoma of the skin can occur anywhere on the body, including inside the mouth, on the anus and genitals. The clinical presentation of a squamous cell carcinoma is usually a slow-growing, tender, scaly or crusted lump. The lesion may develop into a sore or ulcer that fails to heal. They often arise within actinic keratoses. A skin biopsy must be done to confirm the diagnosis. Squamous cell carcinoma of the skin is usually not life-threatening, though it can be aggressive in some cases. Untreated, squamous cell carcinoma of the skin can grow large or spread to other parts of your body, causing serious complications. The treatment for SCC depends upon its size, location, number to be treated and how far it has spread, and the overall health of the patient. Some of the treatments include: Electrodesiccation and curettage (ED&C), Surgical excision, Mohs surgery, topical treatments, photodynamic therapy, cryotherapy and Radiotherapy.

Basal cell carcinoma

Basal cell carcinoma is the most common type of skin cancer. It is most commonly caused by long-term exposure to ultraviolet (UV) radiation from sunlight. Basal cell carcinoma often look like open sores, red patches, pink growths, shiny bumps, or scars on sun exposed areas such as the face and neck. They almost never spread (metastasize) beyond the original tumor site. Only in exceedingly rare cases can it spread to other parts of the body and become life-threatening. A diagnosis is confirmed by a skin biopsy, which involves removing a small sample of the unusual skin for testing in a laboratory. Avoiding the sun and using sunscreen may help protect against basal cell carcinoma. Multiple treatments are available for basal cell carcinoma. The treatment options depends on the type, location and severity of the basal cell carcinoma. Some commonly used basal cell carcinoma treatments include: Electrodesiccation and curettage (ED&C), Surgical excision, Mohs surgery, topical treatments, Photodynamic Therapy, cryotherapy and rarely oral therapy.

Actinic keratosis

Actinic keratosis is a rough, scaly patch on the skin that develops from years of exposure to the sun. It is most commonly found on sun exposed areas such as the face, lips, ears, back of your hands, forearms, scalp or neck. These lesions are precancerous, and if left untreated, there is a small risk that they can turn into a type of skin cancer called squamous cell carcinoma. In most cases, actinic keratosis can be treated and cured. Treatment options include the following: Topical creams, cryotherapy (freezing), electrosurgery (use of an electric current), laser resurfacing and Photodynamic therapy (PDT). PDT uses a cream applied to the skin and a special light to destroy pre-cancer cells of the skin.

Skin cancer

Skin cancer is one of the most common cancers in the world. It is is an abnormal growth of skin cells. They most often develop on skin exposed to the sun but can also occur on areas of your skin not ordinarily exposed to sunlight. Skin cancers can appear as moles, scaly patches, open sores, or raised bumps. These signs can vary, depending on the form of skin cancer present. There are three major types of skin cancer — basal cell carcinoma (most common), squamous cell carcinoma and melanoma. Checking your skin for suspicious changes can help detect skin cancer at its earliest stages. Early detection of skin cancer gives you the greatest chance for successful skin cancer treatment.


Moles or nevi are common. Almost every adult has a few moles. They often appear as small, dark brown spots and are caused by clusters of pigmented cells. Moles can develop anywhere on your body, including your scalp, armpits, under your nails, and between your fingers and toes. Most moles are harmless but they can sometimes become cancerous. Monitoring moles and other pigmented patches is an important step in detecting skin cancer, especially malignant melanoma. The risk of melanoma is higher if you have an extensive sun exposure history or use a tanning bed. If you have a mole of concern or would like a comprehensive total body skin exam, book a consultation with Dr. Doumit.


Melanoma also known as malignant melanoma, is a type of cancer that develops from the pigment-containing cells known as melanocytes. It is the most dangerous form of skin cancer. It is caused mainly by intense, occasional UV exposure (frequently leading to sunburn), especially in those who are genetically predisposed to the disease. Melanomas often resemble moles; some develop from moles. Early signs of melanoma are changes to the shape or color of existing moles. The majority of melanomas are black or brown, but they can also be skin-colored, pink, red, purple, blue or white. They typically occur in the skin but may rarely occur in the mouth, intestines, or eye. In women they most commonly occur on the legs, while in men they are most common on the back. Diagnosis is confirmed by a skin biopsy of any concerning skin lesion. Avoiding UV light and the use of sunscreen may prevent melanoma. Treatment is typically removal by surgery. In those with slightly larger cancers, nearby lymph nodes may be tested for spread. Most people are cured if spread has not occurred. In those in whom melanoma has spread, immunotherapy, biologic therapy, radiation therapy, or chemotherapy may improve survival.

Patchy hair loss (Alopecia Areata)

In this type of hair loss, one or more circular bald patches of hair loss usually present suddenly. The hair can fall out on the scalp and elsewhere on the body. It is an autoimmune disorder, in which the immune system attacks hair follicles, that causes alopecia areata. Alopecia areata tends to occur most often in adults 30 to 60 years of age. However, it can also affect older individuals and, rarely, young children. Different types of alopecia areata exist:


  • Alopecia areata (hair loss in patches)
  • Alopecia totalis (lose all hair on the scalp)
  • Alopecia universalis (lose all hair on the body)


It is important to note that alopecia areata is not contagious. There is no cure for alopecia areata. Hair often re-grows on its own. Treatment can help the hair re-grow more quickly. Patients often get more than 1 treatment at a time. A mix of 2 or more treatments often boosts success. Some of the more common treatments are corticosteroid injections and topical creams such as topical corticosteroids, anthralin, and minoxidil. Other rare treatments include Diphencyprone (DPCP) and oral therapy.


Psoriasis is a persistent, long-lasting (chronic) disease that can start at any age including childhood, with peaks of onset at 15–25 years and 50–60 years. Psoriasis produces thick, pink to red, itchy areas of skin covered with white or silvery scales. The most common sites are scalp, elbows and knees, but any part of the skin can be involved. Psoriasis is not contagious and does not spread from person to person. Outbreaks may be triggered by emotional stress, Streptococcal and other infections, smoking, excessive alcohol, and medications such as lithium and beta blockers. There are many treatments for psoriasis. In general, treatments can be divided into three main types: topical treatments, light therapy and systemic medications. Dr. Doumit will select a treatment plan depending on the seriousness of the rash, where it is on your body, your age, health and other factors..