List of Common Fingernail Diseases

Psoriatic nails –characterized rough nail surface, damaged nail beds and discoloration. People who already have the skin condition psoriasis are most susceptible. The nail may also split from the nail bed. Also common is swelling and redness of the nails. This condition needs the attention of a dermatologist.

Paronychia – an infection of the nail fold that occurs when there is a tear in the proximal or lateral fold of the nail. This allows bacteria and fungus to enter the folds and causes redness, swelling and pain. This condition occurs mostly in people who are exposed to water too often and is very contagious. Pseudomonas – a bacterial infection between the nail plate and nail bed. It lives in moist places and an indication that the infection has spread deep is the discoloration it causes. In extreme cases the infection may cause the nail plate to separate from the nail bed.

Pseudomonas – a bacterial infection between the nail plate and nail bed. It lives in moist places and an indication the infection has spread deep is the discoloration it causes. In extreme cases the infection may cause the nail plate to separate from the nail bed.

Tinea Unguis – AKA “nail ringworm” is a fungal infection and makes the nail thick and deformed, causing eventual breakage of the nail plate.

Onycholysis – where the exposed portion of the nail is loosened near the free edge and continuing to the lunula. Sometimes caused by allergic reactions to nail products, fungus, trauma or as a side effect of drugs.

Onychatrophobia – is a condition where the nail shrinks, loses its shine and may even shed altogether.

Onychogryposis – is a thickening of the nail which is sometimes hereditary but usually a result of neglect and bad nail hygiene. It’s also known as “rams horns nails”.

Onychauxis – is a condition with a very thick nail plate caused due to internal problems.

Onychorrhexis – This condition is characterized by a vertical split or ridges. Usually inherited, this condition may also be acquired by contact with strong detergents and cleaning agents. Can usually be repaired through prescription treatments.

Koilonchia – A result of iron deficiency. The nail appears very thin and curves upward.

Onychoptosis – Periodic shedding of nails. This condition is sometimes caused by trauma, a side effect of drugs, stress, fever or as a result of such diseases like syphilis.

Onychophosis – The growth of thick epithelium tissue on the nails.

Onychomadesis – The nail falls from its bed as a result of either chemotherapy, injury or a long illness. The nail grows back as soon as the disease is cured.

Subungual hematoma – The collection of blood under the nail due to injury or trauma. Can be very painful until the blood is released by making a hole in the nail.

Pterygium – The formation of skin on the nail plate. Can be removed by a physician.

Melanonychia – aka “nail moles” are formed as dark spots on the nail matrix.

Petrygium inversum unguis – Live tissue is attached to the underside of the nail. This condition may be hereditary or the result of nail enhancement treatments. Never try to remove this tissue on your own as it may cause blood flow.

Nail patella syndrome – is a genetic disorder which is characterized by skeletal and nail deformity. It usually occurs in 2 out of every 100,000 persons and is transmitted in the ABO blood type.