Recently I have had the same experience. I was having serious hot flashes which I attributed to menopause. I am at the age.... But as soon as the thyroid meds kicked in, hot flashes dissipated and have since disappeared.
"During the peri-menopausal years (the 10 to 15 years before menopause) and menopause (menopause means one year with no periods), it is common for women to suffer a multitude of hormonal complaints. Hot flashes, night sweats and sleep disturbances are common complaints during this time in a woman's life. Most would think these symptoms are associated with a decline in estrogen, but they are also hallmark symptoms of low thyroid, especially night sweats and insomnia." - Excerpt from Healthy Immunity - Thyroid (Hypothyroidism)