Pneumonia and other lung damage Low numbers of all blood cells, blood clotting disorder, bleeding Severe allergic reactions, including widespread blistering rash and skin peeling Poor functioning of the adrenal gland Altered brain function, fainting Sudden behaviour changes, problems with thinking or speech Pain, weakness, numbness, or tingling in the arm or leg Depression Double vision, a blind or dark spot in the visual field Hearing problems Heart failure or heart attack, heart rhythm disorders Stroke, blood clots in brain, limbs or lungs Bleeding into the gut Inflammation or failure of the liver, rarely leading to death Enlargement of both the liver and spleen, liver tenderness Blistering rash, large purple discolourations on the skin caused by bleeding underneath the skin Inflammation of the kidneys Breast pain Swelling of the face or tongue.