A lesion is a growth seen on the skin that makes a particular region of the skin different in appearance as compared to the skin around it. There are two kinds of lesions, primary and secondary. Primary lesions are those that appear on the skin in the first place. They could be moles, birthmarks, or scars caused by injury or infection. Secondary lesions are formed when there is a further development of the primary lesions. For instance, when a primary lesion is aggravated by scratching or a further injury it becomes a secondary lesion.
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1. When the lesion contains a clear fluid and has about a 2.6cm circumference, colored red-brown or white, it is called a vesicle
2. When a boil or acne becomes aggravated and is filled with pus it is called a pustule. A pustule is a raised region on the skin
3. Papules are closely set skin lesions that are raised above the skin surface. They can be brown in color, pink, red, or white. papules may appear on the skin due to
- Lichen planus is a chronic disease affecting the scalp, skin, nails, and mouth
- Skin cancer
- Actinic keratoses – an ultraviolet light-induced condition of the skin that creates a thick scaly lesion
- Seborrhoeic dermatitis – an inflammatory disorder of the skin
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4. When a raised area of the skin that has developed a rash erupts and gradually is no longer visible, that skin problem is called a wheel. Wheals usually appear when you take medicine to which you are allergic to or because of an insect bite.
5. When you can see tiny blood vessels under the surface of the skin, the condition is termed Telangiectasia – this may be a further symptom of scleroderma or rosacea.
6. Freckles or similar circular formations that are very tiny are called macules. They may be of red, brown, or white color and, unlike a vesicle or a pustule, a macule is not raised above the surface of the skin
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7. A nodule is a type of skin lesion that has well-marked edges. It is deeper than a papule as it is more intensely rooted into the skin. When the nodule has a radius of more than 10 mm, it is termed a tumor.
Secondary lesions: Secondary lesions develop when the primary lesions are aggravated. For instance ulcer, erosion of the epidermal layer of the skin, creation of a crusty layer of skin below the skin surface, and so on.
Treatment of skin lesions
Prescribed medication, medicated creams, and staying away from food and environmental allergens are the most significant ways to treat lesions. Surgery is also an option, especially when the lesions have become too large and require prompt treatment.
Heredity and the tendency of a person to develop skin problems are the main causes of this disease. The other factors that may cause secondary skin lesions are the environment and various bacteria and viruses.