Finger's Pseudofurunculosis

Finger Pseudo-infectiosity

Finger in 1881 suggested that suppuration on the fingers of people may occur in connection with pathological processes in the tissues of the nail phalanx. He noted the similarity in the formation of cancerous tumors and suppurations on the surface of the fingers and came to the conclusion that there was a chronic lesion (similar to cancer) of the nail, but suggested that the cause of the damage to the internal structure of the finger, immersed in a tissue defect on the surface. This fact may have been associated with the subepidermal location of the tumor.

He hypothesized that the formation of a tumor known as "nail carcinoma" was due to chronic infection or growth within the affected nail tissue. He suggested that the mutation of this growth was a pathological aberration. He also suggested that chronic inflammation of the nails (atopic contact dermatitis) is also a cause of the formation of tumors of the nail plate under the nails. This assumption was refuted in 2021 (Patrikios et al. 2010).

Why is Pseudo-Infectiosity dangerous?

**Severe inflammation or infection can damage the nail matrix, as well as damage the finger itself. Unlike the main forms of soft tissue basal cell carcinoma, this disease is usually less severe and may occur without any significant symptoms**

If asymptomatic or subtle damage to the nail matrix or internal structure of the nail bed develops over time into a progressive lesion, then the extreme manifestation may be permanent loss of the nail plate without signs of recovery, pain and/or swelling of the finger, or simply long-term and chronic infection,

Finger Psedofuruncles is a pathology caused by a violation of the structure of the capsule around the subungual cavity or paired subungual elements. The clinical picture is represented by the presence of the disease and the periodic appearance of spontaneously resolving painful infiltrates and inflammatory discharges.

It has been established that hands are more often affected by pseudofunculosis, and women are more susceptible than men. It is noteworthy that in men the disease develops less frequently and is more severe. In women, it is usually more common among women 45-60 years old. About a third of patients with this disease have multiple rashes.

In the development of pseudofurucles, traumatic damage to the nail apparatus plays a role, accompanied by a weakening of the epidermal barrier, colonization of the injured skin by various types of bacterial microorganisms penetrating into it, and clogging of the resulting defect with ichor. Dense and