Which vitamin deficiency can lead to weakness and skin infections?

Vitamin B2, also known as riboflavin, plays a crucial role in energy production and the metabolism of fats, drugs, and steroids. A deficiency in riboflavin can result in various symptoms, including weakness, fatigue, and several skin-related conditions. This vitamin is essential for maintaining healthy skin, and its deficiency can lead to problems such as inflammation of the lining of the mouth and throat, cracks or sores on the outsides of the lips (cheilosis), and a swollen, inflamed tongue (glossitis). Moreover, individuals with insufficient riboflavin may be more susceptible to skin infections due to compromised skin integrity and vitality.

In relation to the other vitamins mentioned, vitamin B1 (thiamine) is primarily linked to neurological issues, vitamin B12 is essential for red blood cell formation and neurological function, and vitamin K is mainly associated with blood clotting. None of these would primarily lead to the weakness and skin infections that are characteristic of riboflavin deficiency.