What causes fleshy growths under fingernails looks like another nail but soft?

Fleshy growths under the fingernails that resemble soft nails may be caused by a condition known as a nail matrix tumor, often benign, such as a fibroma or cyst. Another potential cause could be an infection, like a wart or a fungal infection, which can lead to abnormal nail growth. Trauma to the nail bed can also result in the formation of soft tissue growths. If such growths are persistent or concerning, it's advisable to consult a healthcare professional for proper diagnosis and treatment.