Photodynamic therapy (PDT) is a procedure that treats precancerous cells, in addition to other types of cancer cells. The medical treatment does this with the help of a photosensitizing drug and a light source that activates the applied drug, destroying cancer cells. PDT is approved to treat non-small cell lung cancer, esophageal cancer, and Barrett's esophagus. It treats actinic keratosis, as well as acne, rosacea, skin cancer, sun damage, oily skin, wrinkles, warts, psoriasis, and enlarged sebaceous glands. Read more: Photodynamic Therapy Article
Multimedia: Slideshows, Images & Quizzes
Psoriasis Types, Images, Treatments
What is psoriasis? See examples of psoriasis including the different types of nail, plaque, and scalp psoriasis. Learn about...
Skin Cancer Symptoms, Types, Images
Discover the causes, types, and treatments of skin cancer. Learn how to prevent skin cancer and how to check for melanoma, basal...
Bladder Cancer Symptoms, Stages, Treatments
Bladder cancer occurs when cancerous cells, often from the lining of the bladder, begin to multiply. Find more information about...
Types of Psoriasis: Medical Pictures and Treatments
Explore the different types of psoriasis such as plaque psoriasis, inverse psoriasis, and scalp psoriasis. Discover what causes...
Skin Health: 15 Tips for Clear Skin
Acne, pimples, zits and blemishes often appear on the face, back, chest, neck, and shoulders where skin has the most amount of...
Think acne and rosacea are the same? Think again. Take the Rosacea Quiz to learn all about this inflammatory skin condition.
Skin and Makeup Quiz: Test Your Skin and Makeup IQ
Are you doing right by your skin? Take the Skin and Makeup Quiz to learn how to make the most of your beauty regimen.
Acne (Pimples) Quiz: Test Your Medical IQ
Acne is the most common skin disorder in the world. If you suffer from acne, you are not alone and many treatment options are...
Picture of Sunburn
Sunburn is an inflammation of the skin that develops in response to exposure to ultraviolet (UV) radiation from the sun or from...
Picture of Rosacea 2
Rosacea is an inflammatory condition of the midface characterized by the presence of erythema, papules, pustules,...
Picture of Fungal Nail Infection
Nails that are infected with a fungus may become discolored (yellowish-brown or opaque), thick and brittle, and may separate from...
Picture of Lupus
A chronic inflammatory condition caused by an autoimmune disease. See a picture of Lupus Rash and learn more about the health...
Picture of Lung Cancer
Cancer of the lung, like all cancers, results from an abnormality in the body's basic unit of life, the cell. See a picture of...
Picture of Skin
The skin is the largest organ of the body, with a total area of about 20 square feet. See a picture of the Skin and learn more...
Picture of Erythema Following Fraxel Laser Treatment
Mild sunburn-like erythema immediately following Fraxel laser treatment with eight passes. See a Erythema Following Fraxel Laser...
Picture of Acne
Exactly what causes acne? Acne develops when cells and natural oils begin to block up tiny hair follicles in the skin. See a...
Picture of Rosacea 1
Rosacea (say "roh-ZAY-sha") is a skin disease that causes redness and pimples on your nose, cheeks, chin, and forehead. See a...
Picture of Skin Cancer
Excessive exposure to sunlight is the main cause of skin cancer. See a picture of Skin Cancer and learn more about the health...
Picture of Sunburn (First-Degree Burns)
A sunburn is skin damage from the sun's ultraviolet (UV) rays. See a picture of Sunburn (First-Degree Burns) and learn more about...
Picture of Sunburn (Second-Degree)
Your skin type affects how easily you become sunburned. See a picture of Sunburn (Second-Degree) and learn more about the health...
Picture of Wrinkles
Wrinkles are a by-product of the aging process. See a picture of Wrinkles and learn more about the health topic.
Related Disease Conditions
Acne is a localized skin inflammation as a result of overactivity of oil glands at the base of hair follicles. This inflammation, depending on its location, can take the form of a superficial pustule (contains pus), a pimple, a deeper cyst, congested pores, whiteheads, or blackheads. Treatments vary depending on the severity of the acne.
Cancer is a disease caused by an abnormal growth of cells, also called malignancy. It is a group of 100 different diseases, and is not contagious. Cancer can be treated through chemotherapy, a treatment of drugs that destroy cancer cells.
Keratosis Pilaris (KP)
Keratosis pilaris (KP) is a common skin disorder in which small white or red bumps appear around hair follicles on the upper arms, thighs, buttocks, and cheeks. The cause of KP is unknown. There is no cure for keratosis pilaris, and the condition may resolve on its own. Gentle exfoliation, professional manual extraction, chemical peels, and microdermabrasion, along with topical products, are the best treatments for this condition.
Rosacea is a skin disease that causes redness of the forehead, chin, and lower half of the nose. In addition to inflammation of the facial skin, symptoms include dilation of the blood vessels and pimples (acne rosacea) in the middle third of the face. Oral and topical antibiotics are treatments for rosacea. If left untreated, rhinophyma (a disfiguring nose condition) may result.
Bile Duct Cancer (Cholangiocarcinoma)
Bile duct cancer (cholangiocarcinoma) is a rare type of cancer that arises from cells that line the drainage system from the liver and gallbladder to the intestine. Symptoms of bile duct cancer include jaundice, itching, weight loss, and abdominal pain. Physical examination, specialized blood tests, and imaging tests may be used to diagnose bile duct cancer. Treatment for bile duct cancer may include chemotherapy, radiation therapy, and photodynamic therapy. Bile duct cancer typically has a poor prognosis. Preventing liver damage may decrease the risk of developing bile duct cancer.
Warts (Common Warts)
Common warts are skin growths causes by the human papillomavirus. There are many types of warts, including plantar warts, common hand warts, warts under the nails, mosaic wars, and flat warts. Over-the-counter treatments typically involve the use of salicylic acid products.
Psoriasis is a long-term skin condition that may cause large plaques of red, raised skin, flakes of dry skin, and skin scales. There are several types of psoriasis, including psoriasis vulgaris, guttate psoriasis, inverse psoriasis, and pustular psoriasis. Symptoms vary depending on the type of psoriasis the patient has. Treatment of psoriasis may include creams, lotions, oral medications, injections and infusions of biologics, and light therapy. There is no cure for psoriasis.
A keloid is a scar that doesn't know when to stop. When the cells keep on reproducing, the result is an overgrown (hypertrophic) scar or a keloid. A keloid looks shiny and is often dome-shaped, ranging in color from slightly pink to red. It feels hard and thick and is always raised above the surrounding skin.
Skin cancers occur when skin cells undergo malignant transformations and grow into tumors. The most common types of skin cancer, basal cell carcinoma and squamous cell carcinoma, are highly curable when they are diagnosed and treated early. Sun exposure, tanning beds, depressed immune system, radiation exposure, and certain viral infections are risk factors for skin cancer. Skin cancers are treated with surgery or radiation. The prognosis of nonmelanoma skin cancers is generally very good.
Barrett's esophagus occurs as a complication of chronic gastroesophageal reflux disease (GERD), primarily in white males. GERD refers to the reflux of acidic fluid from the stomach into the esophagus (the swallowing tube), and is classically associated with heartburn. Learn the symptoms, causes, and treatments for Barrett's esophagus.
Lung cancer kills more men and women than any other form of cancer. Eight out of 10 lung cancers are due to tobacco smoke. Lung cancers are classified as either small-cell or non-small-cell lung cancers.
Alcoholism and Alcohol Abuse
Alcoholism is a disease that includes alcohol craving and continued drinking despite repeated alcohol-related problems, such as losing a job or getting into trouble with the law. It can cause myriad health problems, including cirrhosis of the liver, birth defects, heart disease, stroke, psychological problems, and dementia. Counseling and a few medications can be effective for alcoholism treatment.
Smoking (How to Quit Smoking)
Smoking is an addiction. More than 430,000 deaths occur each year in the U.S. from smoking related illnesses. Secondhand smoke or "passive smoke" also harm family members, coworkers, and others around smokers. There are a number of techniques available to assist people who want to quit smoking.
Esophageal cancer is a disease in which malignant cells form in the esophagus. Risk factors of cancer of the esophagus include smoking, heavy alcohol use, Barrett's esophagus, being male and being over age 60. Severe weight loss, vomiting, hoarseness, coughing up blood, painful swallowing, and pain in the throat or back are symptoms. Treatment depends upon the size, location and staging of the cancer and the health of the patient.
Skin Cancer and Sun Damage
Second Source WebMD Medical Reference
Age-related macular degeneration (AMD) is a disease that gradually destroys the central vision. In people over 60, AMD is a leading cause of vision loss. Wet AMD occurs when abnormal blood vessels behind the retina start to grow under the macula, leaking blood and fluid and causing rapid vision loss. In dry AMD, light-sensitive cells slowly break down in the macula, resulting in gradual vision loss. Pain is not associated with either form of AMD.
Sunburn (Sun Poisoning)
Sunburn is caused by overexposure to UV radiation from the sun. UV rays can also damage the eyes. Repeated overexposure to UV rays also increases the risk for scarring, freckles, wrinkles, and dry skin. Symptoms of sunburn include painful, red, tender, and hot skin.The skin may blister, swell, and peel. Sun poisoning (severe sunburn) include nausea, fever, chills, rapid pulse, dizziness and more. Home remedies can help relieve sunburn pain, blisters, and peeling. Severe sunburns may need medical treatment. Sun protection and sunscreen for an person's skin type is recommended to decrease the chance of a severe sunburn and sun poisoning.
Gastroesophageal Junction Adenocarcinoma
Gastroesophageal junction adenocarcinoma is cancer that forms in the area where the esophagus joins the stomach. Having GERD and Barrett's esophagus increases one's odds of developing gastroesophageal junction adenocarcinoma. Symptoms and signs of GE junction adenocarcinoma include dysphagia, weight loss, black stool, cough, nausea, and vomiting. Treatment may include surgery, chemotherapy, radiation therapy, immunotherapy, and targeted therapy.
Scar formation is a natural part of the healing process after injury. The depth and size of the wound incision and the location of the injury impact the scar's characteristics, but your age, heredity and even sex or ethnicity will affect how your skin reacts.
Actinic keratoses are rough, scaly patches of skin that are considered precancerous and are due to sun exposure. Prevention is to cut sun exposure and wear sunscreen.
Scalp Psoriasis (Psoriasis of the Scalp)
Scalp psoriasis causes red, raised, scaly patches that may extend from the scalp to the forehead and the back of the neck and ears. Symptoms and signs include itching, hair loss, flaking, silvery scales, and red plaques. Treatment includes topical medicated shampoos, creams, gels, oils, ointments, and soaps, medications, and light therapy.
What Are the Symptoms of Pruritus Scroti?
Pruritus scroti (scrotal itching) may be caused by a variety of conditions, including jock itch, allergic reactions, and sexually transmitted infections. Treatment options may include corticosteroid creams and ointments, oral medications, and phototherapy.
How to Get Rid of Common Warts Fast
Common, plantar, and genital warts are growths on the outer layer of the skin (epidermis) caused by the humanpapilloma virus (HPV). Home remedies touted to get rid of common warts fast include garlic, vitamin C paste, and duct tape; however, none of these methods have been proven to work. Over-the-counter drugs (OTC) used to get rid of warts include cryotherapy (freezing the wart). Doctors that treat warts are skin specialist called Dermatologists.
Hailey-Hailey Disease (Familial Benign Pemphigus)
Hailey-Hailey disease (familial benign pemphigus) is a hereditary skin disease that causes painful blistering the skin folds. There is no specific treatment for this disease, and treatment focuses on alleviating symptoms and signs.
Wrinkles, whether they be fine line or deep furrows, typically appear on areas of the body that receive a high amount of exposure to the sun. Smoking, light skin type, hairstyle, the way you dress, your occupational and recreational habits, and heredity are all factors that promote wrinkling. Medical treatments for wrinkles include antioxidants, moisturizers, alpha-hydroxy acids, and vitamin A acid. Cosmetic procedures that treat wrinkles include dermabrasion, microdermabrasion, glycolic acid peels, laser resurfacing, Botox, and fillers.
Heart Attack Prevention
Heart disease and heart attacks can be prevented by leading a healthy lifestyle with diet, exercise, and stress management. Symptoms of heart attack in men and women include chest discomfort and pain in the shoulder, neck, jaw, stomach, or back.
Sunscreens are crucial for sun protection. Sun damage to the skin from exposure to ultraviolet rays is a risk factor for skin cancer and melanoma. To avoid sunburn, people should limit sun exposure during the peak hours of 10 a.m. to 3 p.m., wear protective clothing, and use a sunscreen. People with sensitive skin should use a sunscreen with an SPF of 30 or more.
What Should I Do After an Unwanted Pregnancy?
There are a variety of options that may help you handle your situation. It might help you to visualize each option and decide how you feel about it. Consider reaching out to trained professionals or close friends if you get overwhelmed.
Local ResourcesFind a local Dermatologist in your town
Treatment & Diagnosis
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- Wrinkles Be Gone! Skin Treatment Choices -- Leroy Young, MD -- 06/25/03
- Psoriasis: Advances in Treatment