hi..thanks for your query. There are several possibilities in the above case. 1)Sycosis : this is an inflammation of the hair follicles. The condition often affects the mustache and beard growth areas. The symptoms include an occurrence of skin eruptions and bumps filled with pus.Sycosis barbae, or barber s itch as it is commonly referred to, is usually seen on the upper lip, the chin and around the jaw. It is typically caused by the staphylococcus bacteria. 2) Ingrown hair : This typically happens when hair in the shaved part regrows inwards into the skin and causes irritation. Preventive measures suggested for this problem include shaving in the direction of beard growth and not shaving very close to the skin. You can consult your dermatologist for a diagnosis regarding the same.Meanwhile you can start application of topical antibiotic cream twice daily on the lesion. Hope this helps.take care.