American Board of Dental Examiners (ADEX) Dental Hygiene Licensing Examination 2025 – 400 Free Practice Questions to Pass the Exam

Myxedema is indeed a recognized symptom of hypothyroidism, which is a condition characterized by insufficient levels of thyroid hormones in the body. This can lead to various changes, particularly in skin and tissue. Myxedema specifically refers to the accumulation of mucopolysaccharides in the skin and subcutaneous tissues, leading to a swollen or puffy appearance, especially around the face. This symptom reflects the body's response to low thyroid hormone levels, influencing the metabolism and storage of proteins and water in the tissues.

Goiter, while also related to thyroid issues, is more commonly associated with hyperthyroidism or iodine deficiency rather than hypothyroidism specifically. Exophthalmos, which involves protruding eyes, is typically linked to hyperthyroidism, especially Graves' disease. An increased heart rate, known as tachycardia, is typically a symptom of hyperthyroidism as well. Thus, myxedema serves as a clear indicator of the metabolic slowdown associated with hypothyroidism, making it the correct answer in this context.