<unk>  is caused by exposing the nail to the bacterial organism, which leads to opportunistic infection. These bacteria are typically found in water sources and soil. They grow and multiply rapidly in moist environments such as sinks, swimming pools and sponges. The seal between the nail and finger acts as a physical barrier to prevent this kind of infection, however hyper-hydration or destruction of the epidermis can impair the barrier, allowing the colonisation of the bacteria. It is possible for a patient to transfer<unk>  from an infected nail to a non-infected nail via self-inoculation, in transferring the bacteria to a new infection site. Predispositions Those working in jobs requiring them to have their hands submerged in water or soil for prolonged periods of time on a regular basis. These include housewives, dishwashers, bakers, barbers, medical personnel and farmers. Patients in hospital for non-related issues have contracted the infection, indicating that<unk>  can be a hospital acquired infection. The elderly and people who have suffered trauma to a finger or nail are predisposed to contracting<unk> . Patients who are already suffering with nail diseases such as onycholysis and onychotillomania are at higher risk of contracting<unk> . Predisposition to<unk>  has also been linked to manicures, heat, dermatitis, ulcerations. Occlusions and excess sweating. Higher risk of contracting the infection is also linked to soccer players and military personnel due to the prolonged periods of time in which they exercise while wear tight fitting shoes as well as immunosuppressed persons and those with weakened epidermis barrier. Bacteria The bacteria "Pseudomonas Aeruginosa" which commonly causes<unk>  Pseudomonas Aeruginosa species of bacteria are the most common causes of<unk> . Nail scrapings have identified Aspergillus, Candida and Klebsiella Pneumoniae species present at the infected nail site. It is unsure whether these are causative organisms or simply coinfections alongside Pseudomonas Aeruginosa.
Green nail syndrome
Yellow nail syndrome
Blue toe syndrome
Shell nail syndrome
Median nail dystrophy
Elejalde syndrome
Scimitar syndrome
Barraquer–Simons syndrome