question: Hello doctor, My girl is 10 months old. Her growth and development are very slow. The test showed elevated TSH level 164.23. Diagnosed with congenital hypothyroidism. I am also hypothyroid but I have been taking my medication Eltroxin 25 mcg properly from the two years. Then why this happened to my daughter? Her development and weight throughout the pregnancy period were normal. Are there any chances of mental retardation or brain damage because hypothyroidism is diagnosed at age of 10 months? At the time of birth, she was healthy. No newborn screening was done by the hospital. Her birth weight was 3 kg 400 gm now she weighs only 5 kg 800 gm. Will she have to take medication throughout life?