The image shows a painful condition known as Paronychia, an infection that develops around the nail fold. It often begins when bacteria or fungi enter through small cuts, hangnails, or damaged skin near the nail. At first, it may seem like minor redness, but it can quickly progress into swelling, tenderness, and a noticeable buildup of pus.

As the infection worsens, the affected area becomes increasingly swollen, tight, and shiny. The yellowish discoloration visible under the skin is a sign of pus accumulation, which indicates that the body is actively fighting the infection. This stage can be extremely painful, especially when pressure is applied, and may limit the normal use of the finger.

Paronychia is commonly caused by habits like nail biting, picking at the skin, or frequent exposure to moisture. People who work with water, chemicals, or irritants are more at risk. Without proper care, the infection can spread deeper, potentially affecting the nail structure or surrounding tissue.

Treatment depends on severity. Mild cases may improve with warm water soaks and keeping the area clean and dry. However, when pus is present, medical attention is often required to drain the infection safely. In some cases, antibiotics or antifungal medications may be prescribed. Early treatment is important to prevent complications and promote faster healing.