Hashimoto is a particular type of disease which occurs when the immune system in the body attacks the thyroid gland, and this consequently affects the secretion of the hormone by the thyroid gland. Hypothyroidism, on the other hand, is the term used to describe the condition in which there is a low amount of thyroid hormones in the bloodstream.
Hypothyroidism can be divided into two parts; the primary and secondary type. The primary type is when there's a meager amount of thyroid hormones in the bloodstream, which the second type is when there is a meager amount of pituitary and hypothalamus glands in the bloodstream.
Hypothyroidism can be caused by a lot of things apart from the activities of the immune system. It can be caused due to the effect of medications we take, and also when we take a little amount of iodine giving foods whereas Hashimoto is caused only by the activities of the immune system on the thyroid gland.