Identify a medical Condition?

A female friend has loss great amounts on hair on her head and has thinned down to a few strands here and there over her head. She has also gained weight through her neck all the way down to her hips, but her arms and legs are very thin. Thin to the point that they are almost frail and resemble the extremities of a 50+ year old woman, she is only 34? Could this be a thyroid issue?