Can I still have filler, botox and a Brazilian butt lift done if I have Hashimoto's disease?

I know you would like a definitive answer you your question, but unfortunately, the answer is maybe. It's often possible to do so, but first you will need to make sure your thyroid issue is well-controlled. Even when your thyroid is doing well, Hashimoto’s can slow your healing and increase the risk of an allergic reaction to fillers and Botox. A plastic surgeon will likely be willing to perform a BBL or provide you with Botox and fillers, but only if and when your endocrinologist gives you the all clear.

Dear Gregarious452350,
it is hard to tell for sure without an examination. As long as your medical conditions are under controlled, you should be able to get elective procedures. If you are considering surgery, I would suggest you consult a board-certified plastic surgeon. Only after a thorough examination, you will get more information and recommendations.
Daniel Barrett, MDCertified, American Board of Plastic SurgeryMember, American Society of Plastic SurgeryMember, American Society of Aesthetic Plastic Surgery

Dear Gregarious452350, thanks for sharing your concers, 1st step to follow is get in touch with your primary care and check this is under control, after this discuss this with your surgeon and there should not be a problem. Make sure you go on consultation with a board-certified plastic surgeon. Hope this helps and best of lucks. Dr. Luis Mejia.