Final answer:
Hypothyroidism commonly causes myxoedema, which refers to the thick, dry, and waxy skin. It is usually found in adults. Other symptoms of hypothyroidism include dull mental ability and high sensitivity to cold.
Step-by-step explanation:
Hypothyroidism often leads to a skin condition called myxoedema, which is known for causing thick, dry, and waxy skin. People with this condition also tend to have a dull mental ability and high sensitivity to cold. This condition is part of a spectrum of skin disorders that affect the integumentary system, ranging from mild cases like eczema and acne to more severe conditions such as dermatophytic infections and systemic diseases. Understanding the broad array of potential skin conditions is vital in the field of medicine, as is recognizing myxoedema as a sign of hypothyroidism.