A lesion is a general term in medicine that refers to any abnormal change or damage to the tissue of the body. Lesions can occur on the skin, inside the body, or in organs, and they vary widely in cause, appearance, and severity.
Types of Lesions
- Skin Lesions: Includes rashes, sores, blisters, or pimples.
- Internal Lesions: Found in organs like the brain (e.g., brain lesions in multiple sclerosis) or lungs.
- Benign or Malignant Lesions: Lesions can be harmless (benign) or linked to diseases like cancer (malignant).
Causes of Lesions
- Infections
- Injuries or trauma
- Autoimmune disorders
- Allergic reactions
- Cancer
Examples
- A cut, mole, or pimple on the skin is a type of lesion.
- A tumor in the liver or a damaged area in the brain caused by a stroke are internal lesions.
Lesions are typically categorized based on their location, size, and cause, and treatment depends on the specific type and underlying cause.
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