Disclaimer: I don't own Grey's Anatomy or anything in this story.

Hope you enjoy reading. This is my first fanfic, so I would love if you could leave reviews. So I could have some ideas on what to include in the next chapter I'm currently writing. Thank you :)

"Hey, are you busy?" Naomi asked Addison. She's sitting in her office looking at her patients file. Addison looked up from her patients file to Naomi.

"I'm just looking at my patient's file. What do you need?"

"I need a genetics consult on my patient. Apparently, they didn't know they were brother and sister before they got married and they want to have a child together."

"Wow, that's interesting. Sure I'll take a consult on them." she followed Naomi out of her office and followed her to Naomi's office. Addison lived in LA with her two-year old son, Henry. She works at her friends, Naomi and Sam's LA practice.

While they were walking Amelia, Derek's sister, walked beside Addison. "Addie, remember you have an appointment with the doctor today with your...condition." she whispered. She paused for a few seconds after the word your. Addison looks at Amelia while walking with Naomi.

"Thanks for reminding me. I'll be there." she whispered back. Amelia nodded and walked a different direction away from Addison and Naomi.

Flashback

Amelia was visiting Addison's house to talk about vacations they want to take over the summer in a couple of months. Addison was talking to Amelia when she noticed something was wrong with herself. Amelia noticed something was wrong with Addison too.

"Addie, what's wrong?" she asked, concerned. They were sitting at the dining table and Addison was trying to grab her glass of water, but she kept on missing it.

"I can't grab my water. Something is wrong with my vision. It got blurry suddenly." she said, worriedly. She kept trying to grab it. When she did, she drank some of it. She tried swallowing the water, but it wouldn't go down her throat. She started choking in her seat. Amelia quickly stood up from her seat and started helping Addison from not choking from her water anymore. Within a few minutes, Addison's vision returned to normal and she stopped choking.

"Addison, what just happened?" Amelia asked, worriedly.

"I don't know. This has never happened before."

"Are you sure?" Amelia is worried for her friend and her sister-in-law. She still counts Addison as her sister, even though Addison and her brother got divorced.

"Something is not right," she finally stopped coughing. She stood up from her chair and sat on the couch. Amelia followed her and sat next to her. "I'm sure that has not happened to me before." Amelia puts her hand on Addison's.

"Do you want me to schedule a doctor's appointment?"

"To see what's happening to me, I guess so." she puts her head into her hands.

"It's okay, Addie. We're going to get through this and to the bottom of it." she puts her hand on Addison's back.

Addison scheduled herself an appointment with a doctor the next day. Amelia went with her for support.

"Addison Montgomery?" the nurse called out to the doctor's office waiting room.

Addison stood up from her chair and walked toward the nurse. Amelia is following behind her. They go to the exam room and the nurse asks Addison some questions, before the doctor comes in. A few minutes later, the doctor comes in and greets Addison and Amelia.

"It's nice meeting both of you," he said after greeting them and shaking their hands. "What brings you here today?" he looked at Addison.

"A few days ago, I was talking with my sister-in-law here and I was trying to grab my glass of water, but my vision became blurry and when I tried to take a drink of it, I started choking on it because it was hard to swallow."

"And these symptoms never happened before?" the doctor asked.

"No, these hasn't." Addison held Amelia's hand.

The doctor wrote down what Addison had told him and does a physical exam on her. "I don't feel anything wrong with you, but did more symptoms appear a few days after the first two symptoms?"

"Yes, I did experience some balance problems." the doctor nodded his head and wrote down what she said on his notepad.

"What are you thinking, doctor?" Amelia asked.

He looked up from his notepad. "I'd like to run a few tests on her and I want to do an MRI to see if there's anything in her brain."

Addison got some tests done on her and an MRI. Amelia was waiting in Addison's exam room, while she was getting the MRI.

An hour and a half later, the doctor came back in the room and his facial expression wasn't what Addison and Amelia had expected.

"So, I have some news for you," he sits down on his wheeling chair and his facial expression turned to that it's bad-news-and-not-good-news face. "The tests that we ran and the MRI showed that you have is Creutzfeldt–Jakob disease or CJD." Amelia puts her hand on Addison's hand.

"What does that mean?" Addison said, worriedly.

"The disease is incurable and you may live for 6 to 7 months. The longest is a year." the doctor said, looking at her and Amelia. Addison immediately started crying and Amelia tried to comfort her. "I'm very sorry, ma'am."

Addison puts her head into her hands. "I'm 35 years old. How can this happen to me?" she said, between sobs.

"The disease can be transmitted by eating meat that is infected with the disease or it can be genetics."

"Henry." Amelia said, worriedly.

"I want my son tested for the disease. He's 2 years old." she said, lifting up her head to look at the doctor. He nodded his head and Addison made an appointment for her son.

End of flashback

Hope you liked reading it! I will update when I am done writing the next chapter, and will do it until this story is over. It would be nice if you left a review and tell me how this chapter sounds like to you. Currently writing next chapter and Mark will be mentioned later on.