Foot and ankle problems usually fall into the following categories:
- Acquired from improper footwear, physical stress, or small mechanical changes within the foot.
- Arthritic foot problems, which typically involve one or more joint.
- Congenital foot problems, which occur at birth, are generally inherited.
- Infectious foot problems, which are caused by bacterial, viral, or fungal disorders.
- Neoplastic disorders, usually called tumors, which are the result of abnormal growth of tissue and may be benign or malignant.
- Traumatic foot problems, which are associated with foot and ankle injuries.
White toenails describes the condition of having white spots on the toenail or the entire toenail turning white. This condition has multiple causes including injury, infection, allergies and diet.
An example of an injury resulting in white toenail would be an object dropped on the toenail that causes trauma to the nail but does not cause broken blood vessels. Instead the injury produces a white spot underneath the nail. However, the more common cause for white toe nail is a fungal infection in the outermost layer of the nail that results in a discoloration.