Bacterial, viral, or fungal infections can lead to skin lesions. Examples include impetigo (caused by Staphylococcus or Streptococcus bacteria), herpes simplex virus (HSV) infections, and fungal infections like ringworm.
Conditions like eczema, psoriasis, and dermatitis can cause red, scaly, or raised lesions on the skin.
Allergic reactions to substances like plants, chemicals, or certain foods can lead to skin lesions. This can manifest as hives (urticaria) or contact dermatitis.
Conditions like lupus, scleroderma, and dermatomyositis can cause skin lesions due to the body's immune system attacking its own tissues.
Some individuals may have genetic predispositions to certain types of skin lesions, such as birthmarks, moles, or conditions like xeroderma pigmentosum which increase susceptibility to skin cancers.
Physical injuries, burns, or other forms of trauma can cause skin lesions. These can range from minor cuts and scrapes to more serious wounds.
Mosquito bites, bee stings, and bites from other insects can lead to skin reactions ranging from small bumps to larger, more inflamed areas.
Skin cancer, such as basal cell carcinoma, squamous cell carcinoma, and melanoma, can present as abnormal growths or lesions on the skin.