Symptoms such as cold, headache, and nasal congestion should be treated accordingly. It is advisable to drink plenty of water and avoid eating irritating foods. Check your body temperature, and if there are symptoms of fever, you can take aspirin or acetaminophen to treat the fever and headache. For nasal congestion, you can take oral medications that suppress gland secretion, or use some nasal drops locally to relieve the swelling of the nasal mucosa and control the sensation of congestion. Drink plenty of water, rest more, and avoid spicy foods and seafood.