Round patches of hair loss in the beard are most commonly caused by alopecia areata, where the body's defence system temporarily affects the hair roots, leading to smooth, bald spots; it is not an infection and does not spread from person to person. In some cases, a fungal infection (ringworm) can look similar, especially if there is itching, scaling, or redness, so a proper check by a doctor is important to confirm the cause. Treatment depends on the diagnosis; doctors often prescribe medicated lotions or mild steroid creams to help reduce inflammation and promote hair regrowth, and antifungal medicines if an infection is found. The good news is that in many people, hair grows back over time, especially with early treatment. Try to avoid scratching or applying random creams, keep the area clean, and manage stress, as it can sometimes trigger or worsen hair loss.