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Adult :: Male :: Foot

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Back to the Skin Disease Finder

The page below contains links to information about the many conditions that can occur on the foot in adults. Conditions that affect the whole foot are varied. Chronic skin conditions such as psoriasis or dyshidrotic dermatitis can involve large parts of the foot. Occasionally, a skin infection called cellulitis can develop that may affect the entire foot. This infection can be the result of bacteria invading through skin damaged by a previous injury or even from athlete's foot. This infection can spread rapidly and requires a physician to treat it. Like any other sun-exposed area of skin, the foot can develop skin cancer. Any new growths or skin changes should be evaluated by a physician. Please see the pages devoted to specific parts of the foot (eg, toe, sole, nail) for even more information.

Abscess An abscess is a infection characterized by a collection of pus underneath a portion of the skin. Bacteria commonly causing abscesses are Staphylococcus aureus and Streptococcus. These bacteria enter the…

Allergic Contact Dermatitis Allergic contact dermatitis is a delayed hypersensitivity reaction (the reaction to the allergen occurs 48–72 hours after exposure). The most common allergens causing allergic contact…

Athlete's Foot (Tinea Pedis) Tinea pedis, also known as ringworm of the foot or athlete's foot, is a surface (superficial) fungal infection of the skin of the foot. The most common fungal disease in humans, athlete's…

Beau's Lines Beau's lines are horizontal (transverse) depressions in the nail plate that run parallel to the shape of the white, moon-shaped portion of the nail bed (lunula) seen at the nail's origin. They result from a sudden…

Bug Bite or Sting Bites or stings from insects (arthropods) are very common. Most reactions are mild and result due to an allergic reaction to either the insect or the toxins injected with the bite or sting.

Callus A callus (tyloma) is a thickening of the skin that occurs in response to excessive, repeated shear or friction forces, commonly due to constant rubbing of the skin.

Cellulitis Cellulitis is an infection of the deeper skin tissue, which is most often caused by the bacteria Streptococcus or Staphylococcus. These bacteria are able to invade the skin through small…

Corn Corns are thickenings of the skin composed of keratin that are typically found on the toes caused by repeated friction or pressure to the area. The base of the corn is seen on the surface of the skin while the top points…

Dyshidrotic Eczema (Dyshidrotic Dermatitis) Dyshidrotic eczema (dyshidrotic dermatitis) is generally defined as a rash limited to the hands (usually the palms and sides of the fingers) and sometimes the feet. Dyshidrotic eczema manifests as small…

Erythrasma Erythrasma is a common chronic skin condition affecting the skin folds. The slowly enlarging patches of pink to brown dry skin are caused by an infection by the bacterium Corynebacterium minutissimum.

Gout Gout, also called gouty arthritis, is a disease of how the body processes nutrients (metabolism) in which crystals of uric acid are deposited in the joints, tendons, and skin. Most commonly affecting men, gout…

Granuloma Annulare Granuloma annulare is a common skin condition characterized by bumps appearing over the joints and the backs of the hands. Its cause is not known, and most episodes of granuloma annulare clear up after a few…

Irritant Contact Dermatitis Irritant contact dermatitis is an inflammatory rash caused by direct chemical injury to the skin. Unlike allergic contact dermatitis, which appears 48–72 hours after exposure to an allergen, the…

Lichen Simplex Chronicus Lichen simplex chronicus (LSC), also known as neurodermatitis circumscripta, is an itchy skin condition causing thickened skin at the areas of skin injured by repeated scratching and rubbing. Lichen…

Melanoma Melanoma is a life-threatening form of skin cancer. This cancer starts in the color-producing (pigment-producing) cells of the skin. Melanoma may develop from a previously existing mole…

Mole (Nevus) A mole (nevus) is a non-cancerous (benign) skin lesion that is made up of the color-producing (pigment-producing) cells of the skin (melanocytes). A mole that is present at birth is referred to as a…

Myxoid Cyst A myxoid cyst (also known as a digital mucous cyst or pseudocyst) is a growth usually occurring on the finger. The cysts are believed to form from deteriorated issues.

Nail Infection, Fungal (Onychomycosis) Onychomycosis, commonly known as a fungal nail infection, is infection of the fingernails or toenails by forms of fungi and yeast. Fungal nail infections account for nearly half of all nail…

Nail Lifting (Onycholysis) Nail lifting (onycholysis) is the spontaneous separation (detachment) of the fingernail or toenail from the nail bed at the end of the nail (distal) and/or on the sides of the nail (lateral). The appearance…

Pitted Keratolysis Pitted keratolysis is a skin condition affecting the soles of the feet and, less commonly, the palms of the hands. It is caused by a bacterial infection of the skin and may give off an unpleasant odor.

Plantar Wart Warts are growths of the skin and mucous membranes (the mouth or genitals) that are caused by over 100 types of the human papillomavirus (HPV). The virus causes thickening of the top skin layer. A plantar wart occurs…

Psoriasis Psoriasis is a non-contagious, lifelong skin problem with thickened red, and often scaly, skin. It is very likely to run in families (hereditary) and seems to be caused by…

Raynaud's Disease Raynaud's disease is a disorder in which the blood vessels to the fingers and toes (digits) become abnormally closed off (constricted). The fingers and toes of individuals with Raynaud's…

Scabies Scabies is an itchy skin condition caused by a tiny parasite (mite) called Sarcoptes scabiei that can live and multiply (infest) on skin. They are passed between people by prolonged skin-to-skin…

Squamous Cell Carcinoma (SCC) Squamous cell carcinoma (SCC) is the second most common form of skin cancer. Squamous cell carcinoma usually occurs on sun-damaged skin, especially in light-skinned individuals with a long history of chronic sun…

Sunburn Sunburn is caused by the skin's reaction to ultraviolet light exposure. It appears as reddening and tenderness of the skin and usually occurs between 12 and 24 hours after the exposure. 

Mole, Atypical (Atypical Nevus) Atypical moles (atypical nevi) or dysplastic moles (dysplastic nevi), are caused by collections of the color-producing (pigment-producing) cells of the skin (melanocytes) in which the cells grow…

Post-Inflammatory Hypopigmentation Post-inflammatory hypopigmentation is a loss of skin color (pigmentation) after your skin heals from an injury. The pigment-producing cells (melanocytes) are damaged or destroyed in the healing…

Shingles (Zoster) Shingles (zoster), also known as herpes zoster, is a painful rash caused by the varicella zoster virus, the virus that causes chickenpox. When a person gets chickenpox, the virus remains sleeping…

Solar Lentigo   A solar lentigo (plural, solar lentigines), also known as a sun-induced freckle or senile lentigo, is a dark (hyperpigmented) lesion caused by natural or artificial ultraviolet (UV)…