Hypothyroidism causes many skin and scalp changes, including open sores, large blisters, scaling, rashes, loss of pigment, and scarring on the scalp and body, according to the Thyroid Foundation of Canada. Additionally, sufferers experience eczema craquele, which is characterized by dry scaly skin that cracks and becomes red.
In addition to causing skin and scalp problems, hypothyroidism causes thinning hair, brittle nails, jaundice and cold intolerance. WebMD notes that hypothyroidism patients experience edema of the hands, arms, feet, legs and face. Facial puffiness; weight gain; an enlarged thyroid gland, which is also known as a goiter; and muscle cramps often occur. The symptoms associated with hypothyroidism range from mild to severe, and they include irregular menstruation, digestive troubles such as constipation, low stomach acid levels, bacterial overgrowth in the small intestine, bloating, flatulence and abdominal pain.
Sufferers often have elevated cholesterol levels, which increases the risk of developing cardiovascular problems, decreased heart rate, bruising issues and clotting problems. Weight gain and the inability to lose weight also affects those who suffer from hypothyroidism. Finally, women with hypothyroidism suffer from irregular or more intense periods, according to Women to Women.
Because of the multitude of symptoms surrounding hypothyroidism, the disease is sometimes mistaken for other illnesses and conditions, including pregnancy, dementia and Alzheimer's disease. This is due to the hormone imbalances that occur with hypothyroidism. When hormone levels are not balanced, it causes a change or loss of brain function and brain activity, as MedlinePlus explains.