Diagnosis of Hypothyroidism
So, how is hypothyroidism diagnosed today by conventional medicine? Unfortunately, the diagnosis by conventional physicians, including thyroid specialists called endocrinologists, is made almost exclusively from blood tests. Generally, T4 and TSH are measured in the bloodstream. Additionally, a protein that binds T4 is also measured. From this protein and T4, the free T4 is calculated. If a patient has a normal TSH and a normal free T4, he is told by the conventional physician that he does not have hypothyroidism, no matter how many symptoms or signs of hypothyroidism he has. This is the fatal error because these tests only pick up the most severe cases of hypothyroidism and miss virtually all of the milder cases that would respond favorably to thyroid hormone treatment.
If most hypothyroid cases cannot be diagnosed by the usual blood tests, how can they be diagnosed? Prior to the extensive use of blood tests, hypothyroid states were diagnosed by astute clinicians, who obtained careful medical histories, including family histories from the patient, and who performed a complete physical examination. Later basal metabolic rates were measured using special equipment. Then came the blood tests--the protein bound iodine or PBI, T4, TSH and even T3 by special radioactive studies. Instead of using the blood tests as adjuncts to diagnosis, they were soon relied upon exclusively. To properly diagnose hypothyroidism, the clinician must go back to the careful medical history, physical examination and measurement of the basal temperature of the body. I'll discuss important aspects of the medical history and physical examination relevant to the diagnosis of hypothyroidism.
What in the medical history suggests the likelihood of hypothyroidism? With regard to infancy and childhood, a high birth weight of over 8 lbs. suggests low thyroid. During childhood, early or late teething, late walking or late talking suggests a low functioning thyroid in the child. Also, frequent ear infections, colds, pneumonia, bronchitis or other infections; problems in school including difficulty concentrating, abnormal fatigue--especially having difficulty getting up in the morning and poor athletic ability all suggest a low thyroid. Keep in mind that a person with low thyroid functioning may have only a few of these characteristics. You don't have to find all of them to suspect a low thyroid.
During puberty, we see the same types of problems in school and with fatigue, which is worse in the morning and gets a little better later in the day. Often, adolescent girls suffer from menstrual irregularity, premenstrual syndrome and painful periods. Drug and alcohol abuse are common.
Throughout life, disorders associated with hypothyroidism include headaches, migraines, sinus infections, post-nasal drip, visual disturbances, frequent respiratory infections, difficulty swallowing, heart palpitations, indigestion, gas, flatulence, constipation, diarrhea, frequent bladder infections, infertility, reduced libido and sleep disturbances, with the person requiring 12 or more hours of sleep at times. Other conditions include intolerance to cold and/or heat, poor circulation, Raynaud's Syndrome, which involves the hands and feet turning white in response to cold, allergies, asthma, heart problems, benign and malignant tumors, cystic breasts and ovaries, fibroids, dry skin, acne, fluid retention, loss of memory, depression, mood swings, fears, and joint and muscle pain.