What Causes Skin Lesion? Medically reviewed by Judith Marcin, MD on July 26, — Written by Kimberly Holland A skin lesion is a part of the skin that has an abnormal growth or appearance compared to the skin around it.
Two categories of skin lesions exist: Primary skin lesions are abnormal skin conditions present at birth or Read More What are skin lesions? A skin lesion is a part of the skin that has an abnormal growth or appearance compared to the skin around it. Secondary skin lesions are the result of irritated or manipulated primary skin lesions. For example, if someone scratches a mole until it bleeds, the resulting lesion, a crust, is now a secondary skin lesion. Conditions that cause skin lesions, with pictures Many conditions can cause different types of skin lesions.
Here are 21 possible causes and types. Commonly located on the face, neck, shoulders, chest, and upper back Breakouts on the skin composed of blackheads, whiteheads, pimples, or deep, painful cysts and nodules May leave scars or darken the skin if untreated Read full article on acne.
Cold sore Red, painful, fluid-filled blister that appears near the mouth and lips Affected area will often tingle or burn before the sore is visible Outbreaks may also be accompanied by mild, flu-like symptoms such as low fever, body aches, and swollen lymph nodes Read full article on cold sores. Herpes simplex The viruses HSV-1 and HSV-2 cause oral and genital lesions These painful blisters occur alone or in clusters and weep clear yellow fluid and then crust over Signs also include mild flu-like symptoms such as fever, fatigue, swollen lymph nodes, headache, body aches, and decreased appetite Blisters may reoccur in response to stress, mensturation, illness, or sun exposure Read full article on herpes simplex.
Actinic keratosis Typically less than 2 cm, or about the size of a pencil eraser Thick, scaly, or crusty skin patch Appears on parts of the body that receive a lot of sun exposure hands, arms, face, scalp, and neck Usually pink in color but can have a brown, tan, or gray base Read full article on actinic keratosis. Allergic eczema Often found on hands and forearms Skin is itchy, red, scaly, or raw Blisters that weep, ooze, or become crusty Read full article on allergic eczema.
Impetigo Common in babies and children Rash is often located in the area around the mouth, chin, and nose Irritating rash and fluid-filled blisters that pop easily and form a honey-colored crust Read full article on impetigo.
Contact dermatitis Appears hours to days after contact with an allergen Rash has visible borders and appears where your skin touched the irritating substance Skin is itchy, red, scaly, or raw Blisters that weep, ooze, or become crusty Read full article on contact dermatitis. Psoriasis Scaly, silvery, sharply defined skin patches Commonly located on the scalp, elbows, knees, and lower back May be itchy or asymptomatic Read full article on psoriasis. Chickenpox Clusters of itchy, red, fluid-filled blisters in various stages of healing all over the body Rash is accompanied by fever, body aches, sore throat, and loss of appetite Remains contagious until all blisters have crusted over Read full article on chickenpox.
Shingles Very painful rash that may burn, tingle, or itch, even if there are no blisters present Rash comprising clusters of fluid-filled blisters that break easily and weep fluid Rash emerges in a linear stripe pattern that appears most commonly on the torso, but may occur on other parts of the body, including the face Rash may be accompanied by low fever, chills, headache, or fatigue Read full article on shingles.
Sebaceous cyst Sebaceous cysts are found on the face, neck, or torso Large cysts may cause pressure and pain They are noncancerous and very slow growing Read full article on sebaceous cyst. MRSA staph infection This condition is considered a medical emergency. Urgent care may be required. Cellulitis This condition is considered a medical emergency.
Caused by bacteria or fungi entering through a crack or cut in the skin Red, painful, swollen skin with or without oozing that spreads quickly Hot and tender to the touch Fever, chills, and red streaking from the rash might be a sign of serious infection requiring medical attention Read full article on cellulitis.
Scabies Symptoms may take four to six weeks to appear Extremely itchy rash may be pimply, made up of tiny blisters, or scaly Raised, white or flesh-toned lines Read full article on scabies. Boils Bacterial or fungal infection of a hair follicle or oil gland Can appear anywhere on the body, but are most common on the face, neck, armpit, and buttock Red, painful, raised bump with a yellow or white center May rupture and weep fluid Read full article on boils. Bullae Clear, watery, fluid-filled blister that is greater than 1 cm in size Can be caused by friction, contact dermatitis, and other skin disorders If clear liquid turns milky, there might be an infection Read full article on bullaes.
Blister Characterized by watery, clear, fluid-filled area on the skin May be smaller than 1 cm vesicle or larger than 1 cm bulla and occur alone or in groups Can be found anywhere on the body Read full article on blisters.
Nodule Small to medium growth that may be filled with tissue, fluid, or both Usually wider than a pimple and may look like a firm, smooth elevation under the skin Usually harmless, but may cause discomfort if it presses on other structures Nodules may also be located deep inside the body where you cannot see or feel them Read full article on nodules.
Rash This condition is considered a medical emergency. Defined as a noticeable change in the color or texture of the skin May be caused by many things, including insect bites, allergic reactions, medication side effects, fungal skin infection, bacterial skin infection, infectious disease, or autoimmune disease Many rash symptoms can be managed at home, but severe rashes, especially those seen in combination with other symptoms such as fever, pain, dizziness, vomiting, or difficulty breathing, may require urgent medical treatment Read full article on rashes.
Hives Itchy, raised welts that occur after exposure to an allergen Red, warm, and mildly painful to the touch Can be small, round, and ring-shaped or large and randomly shaped Read full article on hives. Keloids Symptoms occur at the site of a previous injury Lumpy or rigid area of skin that may be painful or itchy Area that is flesh-colored, pink, or red Read full article on keloids.
Wart Caused by many different types of a virus called human papillomavirus HPV May be found on the skin or mucous membranes May occur singly or in groups Contagious and may be passed to others Read full article on warts. What causes skin lesions? The most common cause of a skin lesion is an infection on or in the skin.
One example is a wart. The wart virus is passed from one person to another through direct skin-to-skin contact. The herpes simplex virus, which causes both cold sores and genital herpes , is also passed through direct contact. A systemic infection an infection that occurs throughout your body , such as chickenpox or shingles , can cause skin lesions all over your body.
MRSA and cellulitis are two potentially life-threatening infections that involve skin lesions. Some skin lesions are hereditary, such as moles and freckles. Birthmarks are lesions that exist at the time of birth.
Others can be the result of an allergic reaction , such as allergic eczema and contact dermatitis. Some conditions, like poor circulation or diabetes , cause skin sensitivity that can lead to lesions. Types of primary skin lesions Birthmarks are primary skin lesions, as are moles, rashes , and acne. Other types include the following. Blisters Small blisters are also called vesicles. Larger vesicles are called blisters or bullae.
These lesions can be the result of: