The signs of shunt malfunction are similar to the signs of hydrocephalus: the signs of shunt blockage and disconnection are the same as in hydrocephalus if an infection is present the patient will also have signs of systemic inflammatory response Symptoms related to overdrainage (headache, tiredness, vomiting) are usually worsened by an upright position and therefore become prominent towards the evening. Adult hydrocephalus and shunt complications included.