A person may have a history of cold sores.Logical formLearned from2 sentences. Sores can be itchy.Logical formLearned from2 sentences. Sores may turn into (skin ulcers).Logical formLearned from2 sentences. (Simplex virus) may cause cold sores.Logical formLearned from2 sentences. Sores may become ulcers.Logical formLearned from2 sentences. (Pressure sores) can be chronic.Logical formLearned from2 sentences. A person may have (pressure sores).Logical formLearned from2 sentences. Syndrome may cause sores.Logical formLearned from2 sentences. Sores can be on mucous membranes of a mouth.Logical formLearned from2 sentences. (Skin sores) may be seen in studies.Logical formLearned from2 sentences. Open sores can be swollen.Logical formLearned from2 sentences. Syphilis may cause open sores.Logical formLearned from2 sentences. Cold sores may be treated.Logical formLearned from2 sentences. Cold sores can be clusters of blisters.Logical formLearned from2 sentences. (Pressure sores) may develop on skin.Logical formLearned from2 sentences.