Cold symptoms that occur regularly in the morning may be related to allergic rhinitis (an allergy that causes sneezing, a runny nose, and nasal blockage). Try to reduce exposure to common triggers such as dust, pollen, and animal allergens, and keep your sleeping area clean and well ventilated. Steam inhalation and saline nasal rinses may help clear the nose. Consult a doctor who may suggest suitable anti-allergy treatment if the problem continues.