Other side effects reported commonly (seen in less than 1 in 10 but more than 1 in 100 patients) included: infection under the skin, flu-like symptoms, sinusitis, anaemia, fluid retention, difficulty sleeping, anxiety, migraine, tremor, pins and needles, burning sensation, reduced skin sensation, bleeding at the back of the eye, effects on vision, blurred vision and light sensitivity, effects on colour vision, eye irritation, bloodshot eyes / red eyes, vertigo, bronchitis, nosebleed, runny nose, cough, stuffy nose, stomach inflammation, gastroenteritis, heartburn, piles, abdominal distension, dry mouth, hair loss, redness of the skin, night sweats, muscle aches, back pain and increased body temperature.