Although hypothyroidism usually develops gradually, when the disease results from surgery or other treatment for hyperthyroidism, symptoms may appear suddenly and include severe muscle cramps in the arms, legs, neck, shoulders, and back.
The ultimate IQ has been shown to be significantly higher in children whose hypothyroidism was detected and treated prior to six weeks of age, compared to those children whose hypothyroidism went untreated for six to 12 weeks.
The onset of this medical emergency can be sudden in children with undiagnosed hypothyroidism; it can be brought on by illness, injury, surgery, use of sedatives or anti-depressants, or exposure to very cold temperatures.
Although this condition is believed to affect up to 11 million adults and children, as many as two out of every three people with hypothyroidism may not know they have the disease.
Many doctors believe that instead of focusing on a particular fad diet, those who have hypothyroidism should concentrate on avoiding foods and supplements that could affect the positive affects of their hormone medication.
Less often, hypothyroidism develops when the pituitary gland fails and does not release enough thyroid-stimulating hormone (TSH), which stimulates the thyroid to produce and secrete normal amounts of T4 and T3.
Bone age assessments are, therefore, used in pediatric evaluation, especially when malnutrition, malabsorption, food intolerance, or endocrinopathies (such as hypopituitarism or hypothyroidism) are suspected.
If the disease is recognized early and adequately treated, the child will grow at an accelerated rate until reaching the same growth percentile where the child measured before the onset of hypothyroidism.
Episodes of numbness and tingling are more common among people with diabetes, hypothyroidism, alcoholism, malnutrition, or who experience mechanical trauma, especially to their limbs, neck or spine.
Dysthymia is prevalent in patients with certain medical conditions, including multiple sclerosis, AIDS, hypothyroidism, chronic fatigue syndrome, diabetes, and post-cardiac transplantation.