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Various health conditions can cause lesions on the skin, bones, or internal organs, with symptoms ranging from mild to life-threatening. Causes include infection, allergies, injury, and cancer. Doctors use tests and medical history to determine the cause. Lesions can be caused by conditions such as herpes, psoriasis, and cancer. Genital lesions can be caused by sexually transmitted diseases, while brain lesions can be caused by injury, infection, or disease.
Many health conditions cause injury, but most result from tissue damage, infection, allergies, injury, and cancer. This condition can appear on the skin, bones or internal organs. Various types of lesions appear differently, with some creating mild symptoms and others being life-threatening. Doctors typically use tests and a patient’s medical history to determine the cause.
A cold sore or fever blister on the mouth represents an ailment caused by the herpes simplex virus. This contagious condition might start out as a blister before forming a scab. Canker sores can appear in clusters or as a single sore, but they are not contagious. They could be caused by a virus, stress, vitamin B12 deficiency, or immune system dysfunction. Other mouth ulcers result from biting the tongue, cheek, or lip and damage from a sharp tooth or appliance.
Many diseases can cause lesions on the skin, ranging from an allergic reaction to skin cancer. You may get bumps, rashes, discoloration, or blisters anywhere on your body. A common reason this condition develops is acne, which is caused by hormonal changes during puberty. Allergies can produce hives or itchy rashes. Skin cancer lesions result from sun exposure and commonly appear on the hands, face and arms.
Psoriasis can develop at any age, but the cause is uncertain. A rash identified as psoriasis could be linked to stress, a reaction to medications, infection, or injury. Genetics play a role in this disorder, which often appears with eczema. Other skin lesions could mimic psoriasis, including scabies and skin cancer. Areas of skin linked to psoriasis are usually high for bacteria.
Growths on bones usually signal cancer that has metastasized from another area of the body. These are usually very painful and can affect adjacent nerves. The most common form of bone injury affects the spine and legs. Breast, lung, prostate, kidney, and thyroid cancers are typical diseases that lead to this condition.
When a lesion develops in the genital region, it could be caused by a sexually transmitted disease, such as herpes. Human papillomavirus produces a lesion that looks like a genital wart. A precancerous lesion might itch and develop into a cyst. Skin cancer could also occur in the genital region.
Damaged tissue in the brain that produces an injury typically occurs when cells die from injury, infection, or disease. When nerve cells die, they could produce areas linked to Alzheimer’s disease. A stroke could also produce damage where healthy tissue once existed in blood vessels. Some brain diseases, such as multiple sclerosis and cerebral palsy, also cause injury.
