Rebetol in combination with an alpha interferon product may also cause aplastic anaemia, pure red cell aplasia (a condition where the body stopped or reduced the production of red blood cells); this causes severe anaemia, symptoms of which would include unusual tiredness and a lack of energy, seizure (convulsions), inflammation of the pancreas, severe rashes which may be associated with blisters in the mouth, nose, eyes and other mucosal membranes (erythema multiforme, Stevens Johnson syndrome), and toxic epidermal necrolysis (blistering and peeling of the top layer of skin).