The symptoms of sneezing and runny nose when patients wake up may be caused by cold or acute rhinitis or allergic rhinitis, as follows: 1. Cold or acute rhinitis: often caused by cold while sleeping, and the occurrence of cold or acute rhinitis, will appear after waking up with nasal congestion, sneezing and clear nasal discharge. 2. Allergic rhinitis: some patients may have allergic Some patients may have allergic rhinitis, also prone to sneezing and clear nasal discharge after waking up, some patients will furthermore have eye allergy symptoms such as itchy eyes and watery eyes, the symptoms of which have seasonal onset characteristics and tend to be more prevalent in spring and autumn. Therefore, if patients continue to sneeze and runny nose after waking up, they need to go to the hospital for further examination to identify the cause of the disease and then take effective treatment and improvement measures.