Hallucination perceptions of something that is not there; unrelated to reality; may be associated with any of the senses e.g. taste, sight, auditory, visual of taste or touch; associated with psychological, or psychiatric illnesses or pathological conditions of the brain; may be stimulated by drugs; hallucinations are not the same as dreams or illusions

Hemiplegia also hemiparesis; a paralysis of one side of the body; associated with disease of the opposite side of the brain

Hemodialysis removal of waste products from the blood by filtration through an artificial membrane, used in treatment of persons with kidney failure

Hyperglycemia excess level of glucose in the blood;

Hypertension blood pressure: elevation of the arterial blood pressure above the normal range expected for an age group

Hypoglycemia very low blood glucose level. Below 4 mmol/l

Impotence male erectile dysfunction causing inability to have sexual intercourse

Insulin a protein hormone produced by the pancreas that functions to regulate the amount of sugar in the blood. Synthetic insulin are used in the treatment of type 1 diabetics

Intermittent Claudication cramping pain brought on by exercise and relieved by rest due to decreased blood supply to the muscles of the limb

Intravenous within or into a vein

Ischemia inadequate blood flow to a body part caused by a blockage in the blood vessel

Lethargy mental and physical sluggishness, inactivity and unresponsiveness