The most common side effects in patients receiving Avastin with or without chemotherapy (seen in more than 1 patient in 10) are leucopenia (low levels of leucocytes, a type of white blood cell), thrombocytopenia (low levels of platelets in the blood), neutropenia (low levels of neutrophils, a type of white blood cell), peripheral sensory neuropathy (damage to nerves in the extremities, such as the hands and feet), hypertension (high blood pressure), diarrhoea, nausea (feeling sick), vomiting, asthenia (weakness), fatigue (tiredness), anorexia (loss of appetite), dysgeusia (taste disturbances), headache, eye disorders, dyspnoea (difficulty breathing), epistaxis (nosebleeds), rhinitis (blocked nose), constipation, stomatitis (inflammation of the lining of the mouth), rectal haemorrhage (bleeding from the rectum), exfoliative dermatitis (flaky skin), dry skin, skin discoloration, proteinuria (protein in the urine), pyrexia (fever) and pain.