Fighting for life ... Yaasmeen Castanada who has Stevens-Johnson Sydnrome. Picture: ABC 7 News Source: Supplied

Yaasmeen Castanada, 19, of California is in intensive care, covered in bandages after suffering burns to 70 per cent of her body.

Her life-threatening illness was triggered by an antibiotic pill she got from a friend and took on thanksgiving when she was not feeling well.

Less than 24 hours after she swallowed the pill, her eyes, nose and throat suddenly began to burn.

Castanada’s mother Laura Corona told ABC 7 News that she immediately rushed her to hospital for help. But in the burn ward at UC Irvine Medical Center, she watched her daughter deteriorate.

Burn victim ... Yaasmeen Castanada in hospital in bandages. Picture: ABC 7 News Source: Supplied

Over just four days, Corona said she watched her daughter’s skin fall off as blisters broke out all over her body.

She had to be sedated and put on a ventilator.

“Her face changed within four days,” Corona told ABC 7 News.

“I would wipe her face and all the skin was just falling off.”

Head to toe ... Yaasmeen Castanada has blisters on her body. Picture: ABC 7 News Source: Supplied

She described the situation as “heartbreaking”.

“Heartbreaking, just unreal. Just watching your daughter burn in front of you, literally burn in front of you,” she said.

Doctors diagnosed Castanada with Stevens-Johnson Syndrome (SJS), a rare, serious disorder of skin and mucous membranes, which usually stems from a reaction to a medication or an infection.

It often begins with flu-like symptoms, followed by a painful red or purplish rash that spreads and blisters. The top layer of the affected skin dies and sheds.

Castanada has had surgery on her body, where doctor’s scraped the skin off and applied biobrane, a temporary biosynthetic skin dressing used on superficial and partial-thickness wounds.

Castanada is a university student at California State University in LA, who is studying civil engineering. She also recently became a new mother to a four-month-old baby girl.

Corona told ABC 7 News that others should not share their prescribed medication with each other.

New mum ... Yaasmeen Castanada with her baby girl. Picture: ABC 7 News Source: Supplied

“First of all, don’t share medication, don’t give someone else your medication, don’t offer medication,” she said.

“Another thing also, go get yourself checked out and your kids checked out, because you don’t know what you’re allergic to. You don’t.”

Castanada’s family have set up a Go Fund Me page online to raise more funds for her medical costs and rehabilitation.

The page has already raised close to $10,000. Many donors who have SJS has reached out, offering their advice, and friendship to help Castanada’s family.

You can donate here.