Tinea unguium (onychomycosis) Fungal toenail
infections are common and believed, in many
cases, to be related to pre-existing tinea pedis.
The infection usually begins in the free edge of the
nail, and often affects the great toe first (Figure 1d).
It is usually asymmetrical. The nail becomes
discoloured, either white or yellow, and gradually
becomes more brittle and crumbly. Over time more
nails become involved – although the spreading
infection is often painless and with minimal or no
visible inflammation. As nail damage progresses,
problems with footwear and mobility can occur,
particularly if the nail becomes painful and
thickened (onychogryphosis). Fingernails are
rarely involved, and usually only if trichophyte
hand infection is present.
Tinea unguium (onychomycosis) Fungal toenail
infections are common and believed, in many
cases, to be related to pre-existing tinea pedis.
The infection usually begins in the free edge of the
nail, and often affects the great toe first (Figure 1d).
It is usually asymmetrical. The nail becomes
discoloured, either white or yellow, and gradually
becomes more brittle and crumbly. Over time more
nails become involved – although the spreading
infection is often painless and with minimal or no
visible inflammation. As nail damage progresses,
problems with footwear and mobility can occur,
particularly if the nail becomes painful and
thickened (onychogryphosis). Fingernails are
rarely involved, and usually only if trichophyte
hand infection is present.
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