The murder of King Hamlet can effectively parallel the death of the state of Denmark by Claudius.
Secondly, disease leads to death, so the diseased society of Denmark is doomed. Of them, Hamlet and Twelfth Night are perfect examples of both. The recurring imagery of poison can be interpreted as a metaphorical message throughout the play as poison is being poured into ears in the form of gossip, suggestions of revenge, slander, evil thoughts that spreads sickness and disease upon the entire court of Denmark.
Claudius, as the originator of the corruption in Denmark, is obviously the most evil, deceitful and corrupt character of the play. He comes to the conclusion that no one would willingly bear the pains of his life if they were not afraid of what comes after it.
Also, with the imagery created by Shakespeare, we as readers, can actually comprehend the feelings that are experienced by the characters in Hamlet, that are not always obvious, but remain definitely very important to secure optimum understanding of a great piece of literature.
Throughout such images, Shakespeare succeeds in creating an atmosphere of cold and desolated darkness. And though my sight be of seeing, it is not as it once was.
He used imagery of disease to hint how some of the different characters perceived Hamlet as he put on his "antic disposition". In this quote, the imagery of decay is present because both her father and the flowers have died. The resentful relationship that exists between Claudius and Hamlet is heightened with the use of imagery when Claudius asks about Polonius.
Shakespeare wonderfully creates these metaphors that add great dimension to the play of Hamlet. This directly causes the downfall of the castle and Denmark.