research Koilonychia in a Patient with Alopecia Areata. 2 citations , February 2021 in “PubMed” Koilonychia in alopecia areata can improve with oral corticosteroids.
research Clinical and demographic characteristics associated with nail involvement in alopecia areata: A cross‐sectional study of 197 patients 6 citations , April 2024 in “Health Science Reports” Younger patients with severe alopecia areata often have nail problems.
research Nail Changes Associated With Thyroid Disease 3 citations , August 2022 in “Cutis” Certain nail conditions can suggest thyroid problems, with different symptoms for underactive (slow, thin nails) and overactive (spoon-shaped, brittle nails) thyroid.
research Iron deficiency without anaemia July 2021 in “Clinical Medicine” Iron deficiency without anemia can cause itching and other skin-related symptoms, and iron supplements may help.
research The Classic Dermatological Signs of Iron Deficiency: A Case-Series March 2026 in “International Journal of Clinical Dermatology” Iron deficiency can cause certain skin issues like eczematous hand and perioral lesions.