Abram lied about his wife being his sister in order to deceive Pharaoh and be treated well. God brought plague to Pharaoh and his household because he was having in his custody illegal goods. Abram's wife was untouchable and so strange diseases happened in Pharaoh's house as long as he had Sarah there. Who has custody of what belongs to you? Let's pray to God for recovery and punish the enemy who stole from you.