Epidemiology
Globally, fungal infections affect about 15% of the population and 20% of adults. Athletes foot is common in individuals who wear unventilated (occlusive) footwear, such as rubber boots or vinyl shoes. Countries and regions where going barefoot is more common experience much lower rates of athletes foot than do populations which habitually wear shoes; as a result, the disease has been called "a penalty of civilization". Studies have demonstrated that men are infected 2–4 times more often than women. See also
Toenail fungus, tinea unguium, an infection affecting the toenails
Trench foot, due to moisture and decay

References
External links
 Media related to Athletes foot at Wikimedia Commons
"Athletes Foot". MedlinePlus. U.S. National Library of Medicine.
Nevi appeared in one half the subjects before the age of 10, and between ages 10 and 20 in the rest. In one quarter of cases sun exposure seems to have played a role, a number apparently lower than that expected by researchers. Also surprising to researchers was the low incidence (32%) of Beckers nevi above the nipples, for it had generally been believed that the upper chest and shoulder area was the predominant site of occurrence. Pigmentation was light brown in 75% of cases (note: subjects were Caucasian), and average size of the nevus was 125 cm2 (19 in2). Malignancy
A 1991 report documented the cases of nine patients with both Beckers nevus and malignant melanoma. Of the nine melanomas, five were in the same body area as the Beckers nevus, with only one occurring within the nevus itself. As this was apparently the first documented co-occurrence of the two diseases, there is so far no evidence of higher malignancy rates in Beckers nevi versus normal skin. Nonetheless, as with any abnormal skin growth, the nevus should be monitored regularly and any sudden changes in appearance brought to the attention of ones doctor. Treatment
As Beckers nevus is considered a benign lesion, treatment is generally not necessary except for cosmetic purposes. Shaving or trimming can be effective in removing unwanted hair, while electrology or laser hair removal may offer a longer-lasting solution.