Symptoms of Frozen Shoulder :This condition usually advances slowly in a series of three stages. Each stage can last for several months. These stages include:Freezing Stage: Small shoulder movements hurt and the range of motion begins to lessen.Frozen Stage: Although pain may begin to lessen, your shoulder will become more stiff and harder to move.Thawing Stage: Range of motion in the shoulder begins to return.For some, the pain becomes worse at night, disrupting sleep.