Cold sores may be caused by a virus.Logical formLearned from6 sentences. Crests may pertain-to sores.Logical formLearned from6 sentences. (Mouth sores) can be persistent.Logical formLearned from6 sentences. Genital herpes can be from cold sores.Logical formLearned from6 sentences. Sores may undergo swellings.Logical formLearned from6 sentences. Viruses may cause cold sores.Logical formLearned from6 sentences. Cold sores can be in a life.Logical formLearned from6 sentences. Sores can be on faces.Logical formLearned from6 sentences. (Sore right forearm) may go on a day.Logical formLearned from6 sentences. A person may notice sores.Logical formLearned from6 sentences. Sores can be black.Logical formLearned from6 sentences. Sores can be on bodies.Logical formLearned from6 sentences. Sores can be on a back.Logical formLearned from6 sentences. Open sores can be on faces.Logical formLearned from6 sentences. Some patients may develop sores.Logical formLearned from6 sentences.