of fluids in the tissues of the body leading to swelling. Prolactin levels increased. Prolactin is a hormone that regulates the generation of breast milk. Prolactin elevation is not as significant as with risperidone or haloperidol. Uncommon/Rare (<1% incidence) adverse effects include: Diarrhoea Flatulence Hypertension (high blood pressure) Hypotension (low blood pressure) Syncope (fainting) Tachycardia (high heart rate) Menstrual irregularity Disturbance of accommodation Mydriasis (pupil dilation) Orthostatic hypotension (a drop in blood pressure that occurs upon standing up) Seizure Urinary retention (being unable to pass urine) Urticaria (hives) Vomiting Nasal congestion Photosensitization Hypomania (a dangerously elated/irritable mood) Tingling Paresthesias of the extremities Tinnitus Disorientation Numbness Incoordination Disturbed concentration Epigastric distress Peculiar taste in the mouth Increased or decreased libido Impotence (difficulty achieving an erection) Painful ejaculation Lacrimation (crying without an emotional cause) Weight gain Altered liver function Breast enlargement Drug fever Pruritus (itchiness) Vasculitis a disorder where blood vessels are destroyed by inflammation. Can be life-threatening if it affects the right blood vessels. Galactorrhoea (lactation that is not associated with pregnancy or breast feeding) Delayed micturition (that is, delays in urination from when a conscious effort to urinate is made) Hyperthermia (elevation of body temperature; its seriousness depends on the extent of the hyperthermia) Syndrome of inappropriate secretion of antidiuretic hormone (SIADH) this is basically when the body's level of the hormone, antidiuretic hormone, which regulates the conservation of water and the restriction of blood vessels, is elevated. This is potentially fatal as it can cause electrolyte abnormalities including hyponatraemia (low blood sodium), hypokalaemia (low blood potassium) and hypocalcaemia (low blood calcium) which can be life-threatening. Agranulocytosis a drop in white blood cell counts. The white blood cells are the cells of the immune system that fight off foreign invaders. Hence agranulocytosis leaves an individual open to life-threatening infections. Leukopaenia the same as agranulocytosis but less severe. Neuroleptic malignant syndrome (a potentially fatal reaction to antidopaminergic agents, most often antipsychotics. It is characterised by hyperthermia, diarrhoea, tachycardia, mental status changes [e.g. confusion], rigidity, extrapyramidal side effects) Tardive dyskinesia a most often irreversible neurologic reaction to antidopaminergic treatment, characterised by involuntary movements of facial muscles, tongue, lips, and other muscles. It develops most often only after prolonged (months, years or even decades) exposure to antidopaminergics. Extrapyramidal side effects. Motor symptoms such as tremor, parkinsonism, involuntary movements, reduced ability to move one's voluntary muscles, etc. Unknown incidence or relationship to drug treatment