So sorry to hear that you have got hypothyroidism, which is one of the most complicated problems with our health. Generally speaking, it would give rise to a lot of symptoms to many parts of your body, especially your heart and blood pressure, blood vessels ,etc. However, from what I have heard about, it would not cause eyelashes to fall out. Just take it easy and take positive medical treatment in time.
Yes, hypothyroidism will cause the eyelashes to fall out because of the infection on the eyes. In order to make your eyelashes become more, you could use the vitamin E to adopt on your eyelashes. It is very effective and workable which you could have a try. At the same time, you need to protect the eyes from the good rest, good diet and good nutrition.