It is difficult for the patients themselves to diagnose early signs of skin cancers. They are often marginalized for a very long time. Most skin cancers develop in the regions of the body exposed to sunlight, such as the face or hands. In the case of the basal cell carcinoma, the initial lesions have the form fine pearly nodules or telangiectasia. The squamous cell carcinoma is often developed based on actinic keratosis, a scaly skin lesion. Sudden growth of this change or its spontaneous bleeding should make the patient suspicious. Additionally, attention must be given to skin ulcers, healing through scar formation.