Doctors treating Jessica Whelan, 4, of Clayton-Le-Moors, England, say she has only months to live. According to a Facebook post by her father that has gone viral, Jessica is suffering from stage four Neuro-blastoma, an aggressive cancer of the nervous system.
Last month, an exam showed the cancer was no longer responding to treatments.
Andy Whelan, photographer, decided to shed light on the darkest moment in his life by posting a recent photo of Jessica.
In it, she appears to be in agony.
"My only aim of this image was to highlight the true face of childhood cancer and not the happy smiling bald headed face of a child showing hope that is often portrayed by media. Yes it is heartbreaking but this is reality... I had a massive battle with myself to both take and show this photo, not knowing if it should be shown to others. From the messages, comments and shares it has has had I now know I was right to do so," wrote Andy.
The photo has been shared more than 500,000 times.
"If this photograph only serves as a purpose to make people think twice about this evil and put into perspective what it does to a child then it has achieved its purpose."
A fundraising page has been created by Andy to "give Jessica as much happiness and enjoyment is as possible in whatever time we have left with her. "