"As a photographer it is important to capture the truth and the reality of a situation, too easy it becomes to capture the joy of life whilst discarding the torture that we see."

In a Facebook post by her father that has since gone viral, doctors treating Jessica Whelan, 4, of Clayton-Le-Moors, England, say she has only weeks to live.

Jessica suffers 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. She's been battling this form of cancer for over a year.

Andy Whelan, father and photographer, decided to shed light on the dark moment by posting a photo of Jessica in pain.

"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," the post says Andy.

A GoFundMe page was made to "give Jessica as much happiness and enjoyment is as possible in whatever time we have left with her."

"We knew that this day could and most likely would come but we were certainly not expecting it to come so soon, especially not after her appearing to do so well after her last course of radiation treatment," Andy wrote on the fundraising page.