Nails are composed of tough, keratinized cells that gradually renew themselves and can be affected by certain health issues. One of the signs, and also the most common sign of this problem, is a change in nail color.

Green discoloration of the nail often occurs due to the presence of pigments pyocyanin or pyoverdin, produced by the bacterium Pseudomonas aeruginosa. Pseudomonas is a well-known inhabitant of skin wounds and other areas on the body, which can also cause life-threatening infections. Green nails themselves do not represent a disease but rather indicate nails that are already affected by onycholysis or paronychia.

Paronychia is a term that represents inflammation of the soft tissue around the proximal part of the nail and is characterized by pain, swelling, erythema, and an abnormal gait. Paronychia can be acute and chronic, often with the absence of a portion of the cuticle. Acute paronychia affects only one finger and is accompanied by microtrauma and bacterial infection. The most common culprits are Staphylococcus aureus and Streptococcus epidermidis.


Early treatment with warm compresses and a combination of various creams and antibiotics can halt the progression of paronychia and bacterial nail infections, as well as the development of abscesses. When an abscess has already formed, the bacterial infection has advanced, and symptoms such as fever, intense pain due to pressure on the purulent mass, lymphadenitis, and swelling of surrounding glands may occur.

In cases of paronychia and green nail color resulting from ingrowth and bacterial infection, it is necessary to first address the inflammation or bacterial infection with antibiotics and tamponade before proceeding with the treatment of the ingrown nail using the Arkada method, along with the use of Arkada serum. Arkada serum plays a protective role, specifically preventing the occurrence of bacterial and fungal infections.

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