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Thyroid Disorders:

Thyroiditis - Inflammation of the thyroid gland

Thyroiditis - Inflammation of the thyroid gland

Thyoiditis types either autoimmune or non-autoimmune depending on the cause of inflammation

Autoimmune Thyroiditis:

•   Immune system is attacking the thyroid.   Includes Hashimoto's disease, Postpartum thyroiditis, SIlent/Painless thyroiditis

Non-autoimmune thyroiditis:

•   Microbial infection.   Includes Acute infectious thyroiditis, Sub-Acute thyroiditis

    Toxic substances.   Includes Drug-induced thyroiditis, thyroiditis from radiation exposure

Types of thyroiditis

What Causes Thyroiditis?

Thyroiditis is the result of an attack on the thyroid gland.    An attack causes inflammation, damage and possible death of thyroid gland cells (thyrocytes).

-   Most types of thyroiditis are 3-5 times more prevalent in women than in men

-   Average age of onset is between 30 and 50 years of age

-   Tends to be geographical/seasonal.    Most common in summer and fall;

-   The various types of thyroiditis usually have both hypothyroid and hyperthyroid phases

Symptoms of Thyroiditis

Thyroiditis can cause slow, long-term damage to thyrocytes that cause blood thyroid hormone levels to fall ▼▼▼.   If this happens, symptoms are similar to hypothyroidism (under-active thyroid) :

Symptoms of Hypothyroidism
May include:
• Feeling constantly fatigued • Aching muscles / Vague aches and pains
• Cold hands and feet • Weight gain without eating more
• Coarse, dry, thinning hair • PMS /Heavy menstrual periods / menstrual cramps
• Dry skin • Forgetfulness
• Slow heartbeat • Loss of libido
• Mental sluggishness/”Fuzzy headed” • Constipation
• Depression • Pain in thyroid gland (at front of neck)
• Low basal temperature • Infertility /anovulatory cycles / repeated miscarriage
• Slowed knee-jerk reflexes

Thyroiditis can cause rapid thyroid cell damage/destruction that causes thyroid hormone in the gland to leak out and so increase the blood thyroid hormone levels▲▲▲.    This causes symptoms similar to hyperthyroidism (over-active thyroid). The excess presence of thyroid hormones is referred to as thyrotoxicosis.

Symptoms of HYPERthyroidism
Typical Symptoms Include:
• Weight loss -despite increased appetite • Nervousness, Anxiety, irritability
• Heat intolerance • Tremors in hands/fingers
• Muscle weakness/aches • Fatigue
• Excessive production/excretion of urine (Polyuria) / Excessive thirst • Hyperactivity
• Apathy • Hypoglycemia
• Non-pitting edema over the shin (Pretibial myxedema) • Sweating
Can also include:
• Palpitations/ increased heart rate / arrhythmia • Memory loss
• Diarrhea • Insomnia
• Loss of libido • Pain in thyroid gland (at front of neck)
• Shortness of breath (dyspnea) • Light/absent menses
• Nausea/Vomiting  

Types of thyroiditis

Autoimmune Thyroiditis (Immune system antibodies attack the thyroid)

Iodine-deficient patients shown to have higher rate of anti-thyroid antibodies

A malfunctioning immune system causes some people to make anti-thyroid antibodies.     Acting as if the thyroid gland is foreign tissue, the anti-thyroid antibodies involved with autoimmune thyroiditis are:

•  Anti-thyroid peroxidase (TPO Ab).    These antibodies attack the thyroperoxidase enzyme (TPO), responsible for thyroid hormone production.

•  Anti-thyroglobulin (Tg Ab).   These antibodies block a protein made by the thyroid, necessary for making thyroid hormones.

•  TSH Receptor Antibody (TRAb).   These antibodies stimulate thyroid hormone production by binding to Thyroid Stimulating Hormone (TSH) receptors.

Anti-thyroid Antibodies

Hashimoto's disease

(also called lymphocytic or autoimmune thyroiditis)

Most common cause of hypothyroidism in N. America.   First described by Dr. Hakuru Hashimoto in Japan, 1912.

Autoimmune disease.   The thyroid gland is gradually destroyed by a variety of cell and antibody-mediated immune processes; Both TPO Ab and Tg Ab are elevated in most Hashimoto's cases. The inflamed gland causes it to swell.

Occurs more often in women than in men (between 10:1 and 20:1).   Most prevalent between 45 and 65 years of age;   an average of 1 - 1.5 in a 1000 people have this disease;

Often results in hypothyroidism with bouts of hyperthyroidism.

Postpartum thyroiditis

Diffuse goiter usually present.    Typically 1.5 - 3 times normal gland size

Affects ~5% of women within a year of giving birth and is an exacerbation of an underlying autoimmune thyroiditis.   Aggravated by the immunological rebound that follows the partial immuno-suppression of pregnancy.In essence, the immunological rebound that follows the end of pregnancy precipitates the clinical expression of Hashimoto's disease, which before pregnancy was clinically silent.

Muller AF, Drexhage HA, Berghout A. Postpartum thyroiditis and autoimmune thyroiditis in women of childbearing age: recent insights and consequences for antenatal and postnatal care. Endocr Rev. 2001 Oct;22(5):605-30. PubMed

First Phase.    Hyperthyroidism occurs 1-4 months after delivery, lasts only 2-4 months. Of those with postpartum thyroiditis in the hyperthyroid phase, 25% are found to have TRAb antibodies and ~80% have a positive test result for TPO Ab. Associated symptoms include anxiety, insomnia, palpitations (fast heart rate), fatigue, weight loss, and irritability. This phase of postpartum thyroiditis can be confused with Grave's disease. When present, either exophthalmos (bulging eyes) or a thyroid bruit (audible sound of increased blood flow over hyperactive gland) confirms Graves'disease. After the hyperthyroid phase, the thyroid then returns to normal or progresses to:

Second phase.    Hypothyroidism 3-9 months after child-birth; typical symptoms include fatigue, weight gain, constipation, dry skin, depression and poor exercise tolerance. Most cases resolve after about 12-18 months, but 1 in 5 of these women will develop permanent hypothyroidism.

Silent / painless thyroiditis

(also called subacute lymphocytic thyroiditis)

Tends to have a phase of hyperthyroidism /thyrotoxicosis followed by a return to normal, and then a phase of hypothyroidism, followed again by a return to normal. The time span of each phase can vary, each typically lasting 2-3 months. During the hyperthyroid phase, iodine uptake is suppressed, while during the hypothyroid phase, uptake is increased. This is different to the elevated iodine uptake found in those with Grave's disease.

Non-autoimmune thyroiditis

Infectious Microbes (E.g. bacteria, virus)

Acute infectious thyroiditis.     E.g. mainly bacterial infection, but any microbial infection, which works in the same way as antibodies to cause inflammation; uncommon form of thyroiditis; occasionally painful; mild hypothyroiditis

Subacute thyroiditis (also called de Quervain's thyroiditis).    Presumed caused by a virus (often follows an upper respiratory infection); can be a cause of hypothyroiditis and painful hyperthyroiditis /thyrotoxicosis; different to post-partum and silent thyroiditis in that this type is associated with pain (usually in hyperthyroid phase);Also, may trigger autoreactive B cells to produce TSH (thyrotropin) receptor antibodies (TRAb), resulting in TRAb -associated thyroid dysfunction in some patients.

Iitaka, M, Momotani, N, Hisaoka, T, Noh, JY, Ishikawa, N, Ishii, J, Katayama, S Ito, K 1998 TSH receptor antibody-associated thyroid dysfunction following subacute thyroiditis Clin Endocrinol (Oxf) 48 :445-453. PubMed

Toxic Substances

Drug-induced thyroiditis.     Drugs such as lithium, amiodarone (cordarone - high iodine content, used for arrhythmia), interferon and cytokines have a tendency to damage thyroid cells. Either thyrotoxicosis (excess thyroid hormone) or hypothyroidism;

Radiation exposure follows treatment with radioactive iodine for hyperthyroidism, or external beam radiation therapy for certain cancers.    This frequently leads to hypothyroidism, and occasionally thyrotoxicosis (excess presence of thyroid hormone).


Attend to Diet, Lifestyle & Emotional State


C-Reactive Protein - Reliable Inflammation Marker
hot flame


Chronic low-level inflammation (CLII) involved in almost all health problems

How to treat CLII

Pulsed Electromagnetic Field Therapy (PEMFT)


       "The medical kit of the future"

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General electrotherapy health benefits.   Used systemically and/or locally at specific problem areas of the body, its effective application has many benefits:

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