The document discusses several viral diseases including herpes simplex virus types 1 and 2, varicella (chickenpox), herpes zoster (shingles), rubeola (measles), and epidemic parotitis (mumps). It provides details on the etiology, clinical features, treatment, and prognosis of each disease. The diseases are spread through respiratory droplets, contact with lesions, or sexual contact. Clinical features may include lesions, rashes, fever, and lymphadenopathy. Treatment involves antivirals, analgesics, and supportive care.