Facial swelling that occurs after a good night’s sleep may be caused by a bacterial infection. If a bacterial infection causes acute cellulitis of the face, or if you have inflammatory diseases of the oral and maxillofacial region, such as gingivitis or gum abscess, it may cause swelling of the face. The swelling of the face may also be caused by mumps, which is an acute infectious disease caused by mumps virus infection, and patients may experience swelling and pain on one or both sides of the face. Facial swelling may be caused by allergies, such as some allergic patients, application of cosmetics or contact with other allergens, which may lead to facial allergy and facial swelling with itchy skin and skin rash. In this case, further examination at the hospital is needed to clarify the diagnosis. It is also necessary to exclude heart disease, nephritis and liver cirrhosis, which cause facial swelling.