Lesion is an injury to living tissue caused by a cut, blow, or other impact, typically one in which the skin is broken. It can occur in any part of the body and is a type of physical trauma that can be caused by both external and internal factors. Lesions can be caused by a variety of factors, including bacteria, viruses, fungi, parasites, chemicals, physical trauma, and radiation. Lesions may be localized or may spread to other parts of the body. Lesions can also be categorized according to their cause (e.g. traumatic, infectious, or neoplastic) or according to their appearance (e.g. ulcerative, necrotic, or cystic).
Lesions can be benign or malignant, depending on the underlying cause. Benign lesions are non-cancerous and may include cysts, papillomas, lipomas, and sebaceous cysts. Malignant lesions are cancerous and include melanomas, lymphomas, and leukemias. Treatment for lesions depends on the cause and type of lesion. Benign lesions can often be treated with surgery, radiation therapy, or medications. Malignant lesions may require chemotherapy, immunotherapy, and/or radiation therapy.
It is important to seek medical advice if a lesion is causing pain, changes in skin color, or any other abnormal symptoms. Early diagnosis and treatment of lesions can help prevent the spread of cancer or other serious conditions.
References
Han, P. (2021). Lesions: Definition, Types, Causes, and Treatment. Healthline. https://www.healthline.com/health/lesions
Lo, P., & Reichenberger, E. (2020). What is a Lesion? Causes, Types, and Treatment. Medical News Today. https://www.medicalnewstoday.com/articles/lesion
Savage, S.A., & Bordeaux, J.S. (2015). Lesions: Types, Diagnosis, and Treatment. American Academy of Dermatology. https://www.aad.org/public/diseases/bumps-and-growths/lesions