| Disease | Designation | Cause | Dysfunction | Therapy |
| Iodine deficiency goiter | Struma nodosa | Iodine deficiency | Enlargement of the organ, Nodule, Hyperfunction by "functional autonomy" |
Hormones, Jodgabe, Operation |
| Hyperfunction | Hyperthyroidism | autonomous adenoma, Iodine deficiency, |
Hormone production is too high, Regulation is disturbed (autonomy) |
Hormones, Radioiodine Operation |
| immunogenic hyperthyroidism | Graves disease | Autoantibodies: TRAK (10-100%), TPO-AK (45-90%), |
Hyperthyroidism, hormone poisoning (thyrotoxic crisis) | Thyrostatic possibly surgery possibly radioiodine |
| Hypothyroidism | Hypothyroidism | Hashimoto, Radioiodine, Operation, |
Hormone production is too low, Thyroid cells are destroyed |
Hormone |
| acute inflammation | Acute thyroiditis | Viruses, bacteria, fungi | temporary impairment | symptomatic Antibiotics |
| subacute inflammation | Thyroiditis de Quervain | Viral infection, non-purulent inflammation | temporary impairment: initially hyperfunction, later hypothyroidism |
symptomatic rare surgery |
| chronic lymphocytic inflammation | Hashimoto thyroiditis | Autoantibodies: TPO-AK (80-99%), TRAK (6-60%) |
initially hyperfunction possible hypothyroidism | Hormone |
| chronic fibrous inflammation | Riedel's thyroiditis | very rare special form of thyroiditis | Hypothyroidism | Hormone Operation |
| benign tumors | Adenomas, Struma nodosa |
Iodine deficiency | Enlargement of the organ, Nodule, Hyperfunction by "functional autonomy" |
Hormones, Jodgabe, Operation |
| malignant tumors | Carcinoma | uninhibited growth | Hypothyroidism | Operation Radioiodine Hormone |