A boil, also known as a furuncle, is a painful, pus-filled bump that results from a bacterial infection of the hair follicle. It is a common skin infection, typically caused by a bacteria called Staphylococcus aureus. The infection usually starts as a tender, pinkish-red, bump which fills with pus- becoming larger and more painful.

Candidiasis is an infection caused by the yeast Candida. Candida skin infections (cutaneous candidiasis) can occur at any site, but tends to favor warm, damp environments such as the skin folds and the groin region. Candida infections can also occur in the mouth (oral thrush) and in or around the nails (paronychia or onychomycosis).

Cellulitis is a common bacterial infection of the deeper structures of the skin. The infection presents as a focal area of redness, swelling, and pain which is warm to the touch. These skin findings can be accompanied with fevers, chills, fatigue, and malaise. Cellulitis can affect any part of the body, but is common on the lower legs for adults and on the face for children.

Cold sores, also known as fever blisters, are small, fluid-filled blisters that occur around the mouth or on the lips. They are caused by the herpes simplex virus (HSV) and are highly contagious. Treatment options for cold sores include topical or oral antiviral medications such as acyclovir and valacyclovir.

Genital herpes is a sexually transmitted infection caused by an infection with the herpes simplex virus (HSV). There are two types of the herpes simplex virus- herpes simplex virus type 1 (HSV-1) and herpes simplex virus type 2 (HSV-2). Either type can cause genital herpes, but HSV-2 is responsible for most cases.

Lice are tiny insects that live on human hair and clothing fibers and can be seen with the naked eye. These tiny bugs attach to the hair and feed on human blood, causing intense itching in the affected areas. People can suffer from 3 different types of infestation: head lice (pediculosis capitis), body lice (pediculosis corporis), or pubic lice (pediculosis pubis).

Lyme disease is a tick-borne illness caused by the bacteria Borrelia burgdorferi. It is transmitted to humans through the bite of an infected tick (commonly the deer tick). Early symptoms may include fever, chills, fatigue, headache, body aches, and a characteristic skin rash called erythema migrans.

Scabies is an intensely itchy rash caused by an infestation with a burrowing mite called Sarcoptes scabiei. Infected individuals develop pink papules, excoriations, nodules, and burrows (thread like tracks in the skin). These findings mainly affect the hands, wrists, axillae (armpits), feet, waistline, and genitalia.

Shingles, also known as herpes zoster, is a viral infection caused by the varicella-zoster virus, the same virus that causes chickenpox. It results in a painful rash or blisters on one side of the face or body and is most commonly found in people over the age of 50. After a person has had chickenpox, the virus can remain dormant in their nervous system and reactivate later in life, causing shingles.

Tinea is a type of fungal infection that affects the skin, hair, and nails. Tinea infections are also known as ringworm, although they are caused by fungi, not worms. Some common types of tinea include tinea corporis (ringworm of the body), tinea capitis (ringworm of the scalp), tinea pedis (athlete's foot), and tinea cruris (jock itch).

Tinea versicolor, also called pityriasis versicolor, is a common skin infection caused by the overgrowth of a yeast. Typically, it presents as patchy areas of lighter or darker discoloration on the trunk and shoulders that can be scaly in appearance. It can affect anyone, but is more common in teens and young adults.