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Adult :: Male :: Anogenital

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Back to the Skin Disease Finder

In the adult, the conditions that can affect the areas of the genitals and the anus can be a delicate subject, such as those conditions that are the result of sexually transmitted diseases (STDs). Herpes and syphilis can cause the skin to wear away and even cause open sores. In men, gonorrhea and chlamydia can cause a discharge from the penis and pain with urination. Genital warts and molluscum contagiosum are caused by a virus, and in these conditions lesions can from in any area around the penis and the anus. Pubic lice, sometimes known as "crabs", live in the pubic hair and cause itchy bites. It is important to note that not all conditions affecting the anus and genitals are sexually transmitted, however. Jock itch (tinea cruris) is a common rash caused by a fungus. Rashes from exposure to chemicals in these areas are also common. Please note that the pictures below are of an explicit nature before clicking the image fields.

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…

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.

Fordyce Spots Fordyce spots are normal large, superficial sebaceous (oil-producing) glands seen on the moist tissue that lines some organs and body cavities (mucosal surfaces). The "spots" are asymptomatic and can be…

Genital Herpes Genital herpes, the herpes simplex infection of the genital area, is a common, recurrent skin condition associated with infection by the herpes simplex virus (HSV). HSV infection usually appears as…

Genital Wart (Condyloma Acuminata) Genital warts (condyloma acuminata) are caused by more than 30 types (strains) of human papillomavirus (HPV). The infection involves the genital area of men or women and is spread by skin-to-skin contact during…

Gonorrhea, Primary Infection Gonorrhea is a sexually transmitted disease caused by the bacterium Neisseria gonorrhea. It is a contagious sexually transmitted disease spread by unprotected oral, vaginal, or anal sex…

Intertrigo Intertrigo is irritation of touching skin surfaces in body fold regions (armpits, under the breasts, belly, buttocks, groin, and sometimes between fingers or toes). Intertrigo can be worsened by…

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…

Jock Itch (Tinea Cruris) Jock itch (tinea cruris) is a surface (superficial) fungal infection of the skin on either side of the body where the thigh joins the abdomen, known as the groin. It is often spread to the groin…

Lichen Planus Lichen planus (LP) is a disease of the skin and, less often, the scalp, fingernails, toenails, and/or inside the mouth or genitalia (mucous membranes). Lichen planus can resolve on its own…

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…

Lymphogranuloma Venereum (LGV) Lymphogranuloma venereum (LGV) is an uncommon sexually transmitted disease caused by certain types of the bacteria called Chlamydia trachomatis. It is spread through having unprotected…

Molluscum Contagiosum Molluscum is a common painless and usually harmless viral infection of the skin. Although it is painless and usually goes away after several months, some cases can last a few years.

Primary Syphilis Primary syphilis is a disease caused by a corkscrew-shaped bacterium (a spirochete) called Treponema pallidum. It causes disease when it penetrates broken skin of the…

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…

Pubic Lice (Pediculosis Pubis) Pubic lice (pediculosis pubis), also known as crab lice or crabs, is a louse (a type of wingless, bloodsucking insect) that can live and multiply (infest) on skin that grows pubic hair. Pubic lice most…

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…

Sebaceous Hyperplasia Sebaceous hyperplasia is a common harmless enlargement of the skin oil glands.

Seborrheic Keratosis Seborrheic keratoses are common benign growths of unknown cause seen in adults due to a thickening of an area of the top skin layer.

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…

Vitiligo Vitiligo is a disease where the immune system turns against itself (autoimmune disease) where immune cells of the body attack the color-producing (pigment-producing) cells to cause white patches on the…

Acanthosis Nigricans Acanthosis nigricans is a condition characterized by abnormal thickening and darkening of the skin, especially in body creases. It is most commonly associated with obesity or polycystic ovarian disease in…

Boils (Furunculosis) Boils (furuncles) are painful pus-filled bumps on the skin resulting from the deep infection of a hair follicle. The infection is usually caused by a type of bacteria called Staphylococcus aureus…

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…

Common 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). Common warts are usually found on areas of the body prone to trauma, such…

Epidermoid Cyst Epidermoid cysts, sometimes known as sebaceous cysts, contain a soft "cheesy" material composed of keratin, a protein component of skin, hair, and nails. Epidermoid cysts form…

Folliculitis Folliculitis is a skin condition caused by an inflammation of one or more hair follicles in a limited area. It typically occurs in areas of irritation, such as sites of shaving, skin friction, or rubbing from…

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…

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 Hyperpigmentation Post-inflammatory hyperpigmentation is darkening of the skin in an area of prior injury or skin disorder from increased pigment (melanin) left from the healing process. Sometimes the darkening may also be…

Ringworm (Tinea Corporis) Tinea infections are commonly called ringworm because some may form a ring-like pattern on affected areas of the body. Tinea corporis, also known as ringworm of the body, tinea circinata, or simply…

Seborrheic Dermatitis Seborrheic dermatitis, also known as seborrhea, is a common non-contagious condition of skin areas rich in oil glands (the face, scalp, and upper trunk). Seborrheic dermatitis is marked by flaking…

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…

Skin Tag (Acrochordon) A skin tag (acrochordon) is a common, possibly inherited condition that manifests as small, flesh-colored growths on a thin stalk. Skin tags are benign lesions that can sometimes become irritated or…

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)…

Syringoma Syringoma is a non-cancerous (benign) bump usually found on the upper cheeks and lower eyelids of young adults. Syringomas are completely harmless and are caused by the overgrowth of cells…