Nails in hyperthyroidism

Q: In hyperthyroidism, nails tend to get? (select one)

A) hard

B) soft

Answer: B

Physical exam plays an integral part in hyperthyroidism. Skin tends to be warm and possibly erythematous due to increased blood flow. Also, it becomes smoother due to thinning keratin layer. Onycholysis is a common finding in hyperthyroidism. Hyperpigmentation is usually evident due to accelerated cortisol metabolism, leading to increased corticotropin (ACTH) secretion.

Vitiligo, alopecia areata, and thinning of the hair may also occur.

#endocrinology

#physical exam

References:

1. Heymann WR. Cutaneous manifestations of thyroid disease. J Am Acad Dermatol 1992; 26:885.

2. KIRKEBY K, HANGAARD G, LINGJAERDE P. THE PIGMENTATION OF THYROTOXIC PATIENTS. Acta Med Scand 1963; 174:257.

3. Collet E, Petit JM, Lacroix M, et al. [Chronic urticaria and autoimmune thyroid diseases]. Ann Dermatol Venereol 1995; 122:413.