One recent college graduate from England thought she had developed an allergy to drinking alcohol — but it turned out to be blood cancer.

Izzy Fletcher used to love partying until she started having a weird reaction that turned out to be blood cancer.

“The doctor thought it was nothing to do with [the cough], and then when they realized it was Hodgkin’s lymphoma they found that it was linked to it,” Fletcher explained.

Despite her scary diagnosis, she has a positive outlook on it all, thanks to its high five-year survival rate of 80%, according to the American Cancer Society.

When you have the disease, your white blood cells, which are called lymphocytes, grow “out of control,” which results in swollen lymph nodes in your body.

“The doctor thought it was nothing to do with [the cough], and then when they realized it was Hodgkin’s lymphoma they found that it was linked to it,” Fletcher explained.