Gigantism - abnormal excessive secretion of growth hormones in the pituitary gland.
Dwarfism - abnormal little secretion of growth hormones in the pituitary gland.
Goiter - abnormal secretion of thyroid gland, because of too much or too little.
diabetes mellitus - inadequate secretion of pancreas of hormone insulin.
Diabetes insipidus - inadequate secretion of vasopressin secreted by pituitary gland.
Thyrotoxicosis - excessive production of thyroid hormones.