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Tinea nigra, also known as superficial phaeohyphomycosis and Tinea nigra palmaris et plantaris, [2] is a superficial fungal infection, a type of phaeohyphomycosis rather than a tinea, that causes usually a single 1–5 cm dark brown-black, non-scaly, flat, painless patch on the palms of the hands and the soles of the feet of healthy people. [1]
A plantar wart is a wart occurring on the bottom of the foot or toes. [5] Its color is typically similar to that of the skin. [2] Small black dots often occur on the surface. [5] One or more may occur in an area. [2] They may result in pain with pressure such that walking is difficult. [2] They are caused by the human papillomavirus (HPV). [2]
Pitted keratolysis (also known as keratolysis plantare sulcatum, [1] keratoma plantare sulcatum, [1] and ringed keratolysis [1]) is a bacterial skin infection of the foot. [2] The infection is characterized by craterlike pits on the sole of the feet and toes, particularly weight-bearing areas.
Painful corns. A corn (or clavus, plural clavi) is a cone-shaped callus that penetrates into the dermis, usually on the feet or hands. Corns may form due to chronic pressure or rubbing at a pressure point (in this skin over a bone), or due to scar tissue from a healing wound creating pressure in a weight-bearing area such as the sole of the foot.
Any part of the foot can be affected by diseases, with symptoms ranging from mild aches to more serious pain hindering one's ability to walk or bear weight. Most minor cases of foot pain can be responded to by home care treatments. However, when severe pain is present, medical attention is required as it is a disabling condition.
Tungiasis causes skin inflammation, severe pain, itching, and a lesion at the site of infection that is characterized by a black dot at the center of a swollen red lesion, surrounded by what looks like a white halo. Desquamation of the skin is always seen, especially after the flea expands during hypertrophy.
[7]: p15, 18, 72–73 At the end of a long journey on foot, the arches flatten, the metatarsals spread, and the foot swells more than after a short one. [ 7 ] : 52 The toes also need vertical space; a toe cap which is low enough to press on the top of the toe may also cause bruising under the nail, especially if the toe cap is stiff.
A rash is a change of the skin that affects its color, appearance, or texture.. A rash may be localized in one part of the body, or affect all the skin. Rashes may cause the skin to change color, itch, become warm, bumpy, chapped, dry, cracked or blistered, swell, and may be painful.