The butterfly-shaped muscles present in our neck is called thyroid. It is responsible for controlling the energy usage by the body. That's why thyroid disease affects no specific part but the whole body. This includes the skin and hair too. The thyroid-related diseases make hair rough and brittle and can also cause pigmentation and dark spots on the skin. To know more about the problem and its solution, read the full article on Indian Express, click on the link: https://bit.ly/2Nr6GJI.