The term lesion describes the abnormal skin conditions, such as the macules, vesicles, and abscesses. The lesions are caused usually by diseases or trauma, and can occur in both animals as well as plants. They can be divided into two different categories, namely the primary lesions and the secondary lesions. The primary lesions are present from birth or are acquired over lifetime. The secondary lesions, on the other hand, are a result of the irritated primary lesions.
Hence, the answer is 'lesions'.
