The condition worsened when Sharma's cousin killed herself after being abused by a classmate.
"For months I would get nightmares and I would feel this anxiety, constant burning sensation in the stomach, which wouldn't go," Sharma said.
"It's heartbreaking, it's disturbing, sometimes I feel I can't breath, it's suffocating."
The 35-year-old Indian photographer said the idea to make portraits of women and girls who were raped was born in part out of frustration about the way the media reported the crime, and in part out of curiosity about the lives of the survivors.
"It was all about 'who, why, when, why' but it was not about people who were actually affected by it the most," Sharma told the Thomson Reuters Foundation by phone from India.
"Especially after the incident and the media craziness was over I used to wonder 'do people go back to them to ask how they are they doing?'"
Sharma, who is a survivor of abuse herself, said the intention behind the project was to start a discussion about life after rape and to put faces to the stories.
"My idea was to show them as just you and me, as a normal human being," Sharma said.
But sometimes the victims cannot be photographed – because they are dead.
"(One of them) was a 23-year-old girl, extremely good looking, working in an office," Sharma said.
"Her mother took me to the place where her body was found, half-naked. It was found two days later and there were ants coming out of her mouth and eyes."
Sharma said rape survivors and their families often face shame and ostracism which makes it difficult to forget about the crime and move on.
"It's a crime, it's a trauma that they go through, but they want to be invited to weddings, they want to go back to school, they want to get a job," Sharma said.
"They don't want to be reminded again and again that they were raped."
Sharma, who so far has photographed more than 20 women and girls in four Indian states aged from five years old to 80, said she wanted to reach survivors across India, which she said was an expensive challenge.
In December she launched an online fundraising campaign to finance the project which she has been funding mainly with her own money. She hope the money raised would also help to finance a short documentary about the survivors.
"I feel I have to do something for these girls, I owe it to them," she said. "If they're sharing their pain with me I do have a responsibility to bring some change in some way."
In 2014, 36,735 rapes were committed and nearly 338,000 crimes against women were reported, according to data from India's National Crime Records Bureau.
But women's rights groups say the figures are still gross underestimates, as many victims remain reluctant to report crimes such as rape or domestic violence for fear their families and communities will shun them.
Sharma said that India needs a "change of the mindset" and to be more open about the issue of rape for things to change.
"Most of the people just don't want to talk about it. It's not that they don't care but they just don't want to touch (the issue)," she said.
"If the mindset does not change, if you do not discuss about what is wrong, things are going to continue."
