<p>WhatsApp is a messaging system popular with smartphone users around the world. Photograph: Barry Huang/REUTERS</p><p>A doctor in Granada is advising fellow physicians to be "mindful" of the injuries that can result from using instant messaging services, after she diagnosed a 34-year-old pregnant woman with "WhatsAppitis".</p><p>The case, described by the doctor in the Lancet, said the patient was suffering sudden pain in both wrists after waking up in the morning. Ines Fernandez-Guerrero, of Granada's General University hospital, wrote that the patient "had no history of trauma and had not engaged in any excessive physical activity in previous days". She ruled out carpal tunnel syndrome and nerve damage.</p><p>The patient had been working on Christmas Eve. The next day, she responded to the many WhatsApp social messages that had been sent to her. Her phone was in her hands for at least six hours, during which she "made continuous movements with both thumbs to send messages", said the doctor.</p><p><a href="http://www.theguardian.com/technology/2014/mar/26/can-instant-messaging-damage-health-doctor-warns-whatsappitis">Keep reading...</a></p><p>Read also:</p><p><a href="http://www.dailymail.co.uk/sciencetech/article-2590088/Are-YOU-addicted-Doctors-warn-messaging-apps-harm-health-discover-case-WhatsAppitis.html">Doctors warn messaging apps could harm health as they discover first case of ...</a> (Daily Mail)</p><p><a href="http://www.hindustantimes.com/lifestyle/wellness/lancet-study-prolonged-messaging-on-your-smartphone-can-cause-whatsappitis/article1-1201016.aspx">Lancet study: Prolonged messaging on your smartphone can cause &#039;WhatsAppitis&#039;</a> (Hindustan Times)</p><p><a href="http://time.com/38952/whatsapp-health-damage/">Quit Texting All the Time Because You Might Get WhatsAppitis</a> (TIME)</p><p>Explore: <a href="http://news.google.com/news/more?ncl=dnDH6wYaEPZvdbMcLJ79euxEw7zeM&authuser=0&ned=us">14 additional articles.</a></p>