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   Rash
 
Definition:
An eruption on the body skin typically with subtle or no elevation above the surface.
 
Medical terms related to rash :
Dermatitis, Eczema, Erythema, Exanthem, Heat Rash, Hives, Lupus Rash, Poison Ivy Rash, Poison Oak Rash, Rubor, Skin Eruption, Skin Inflammation, Skin Lesions, Skin Rash, Skin Redness
 
Common causes of rash: 
o Acne (Pimples)
o Atopic Dermatitis
o Measles (Rubeola)
o Insect Sting Allergies
o
Heat Rash:
Noncontiguous red pimples with intense itching and tingling caused by inflammation around the sweat ducts.
o
Hives (Raised edematous red patch of skin or mucous membrane)
o Diaper rash (in infants)
o Dry skin (xerosis)
o Medications
o Scarlet fever
o Viral infections
o Fungal infection
o
Seborrheic dermatitis:
Seborrheic dermatitis is a common skin disease that is marked by red, scaly, itchy rashs most commonly seen on the scalp, sides of the nose, eyebrows, eyelids, skin behind the ears, and middle of the chest.
o
Pityriasis rosea:
An acute self-limited skin eruption that consists of dry, scaly, oval, pinkish or fawn-colored papules, usually lasts six to eight weeks, and affects especially the trunk, arms, and thighs.
o Roseola (Rose-colored eruptions, e.g. in Roseola Infantum)
o Shingles (Called also Herpes zoster, Zona, Zoster)
o Staph Infection (Staphylococcus Aureus)
o Sunburn and Sun-Sensitizing Drugs ( e.g. Trtracycline)
o Intertrigo (Inflammation produced by chafing of adjacent areas of skin)
o
Fifth Disease:
A parvovirus, B19 virus, infection that presents with a blotchy red rash on the cheeks followed by a maculopapular rash on the extremities accompanied by fever and malaise that occurs mostly in children, called also Erythema Infectiosum.
o
Impetigo:
Vesicles, pustules, and yellowish crusts on skin caused by staphylococcus or streptococcus.
o
Poison Ivy:
A climbing plant of the genus Rhus (R. radicans synonym Toxicodendron radicans)that produces an acutely irritating oil causing a usually intensely itching skin rash.
o
Rheumatoid Arthritis (RA):
A chronic autoimmune disease marked especially by pain, stiffness, inflammation, swelling, and sometimes destruction of joints;called also atrophic arthritis.
o
Rosacea (Acne Rosacea):
A chronic inflammatory disorder affecting especially the skin of the nose, forehead, and cheeks and is marked by congestion, flushing, telangiectasia, and marked nodular swelling of tissues especially of the nose.
o
Ringworm:
Ring-shaped discolored patches on the skin, hair, or nail that are covered with vesicles and scales caused by fungi, e.g. genus Trichophyton.
o
Hand Foot And Mouth Syndrome (HFM):
Vesicular lesions on the mouth and an exanthem on the hands and feet (and buttocks) in association with fever caused by a group of RNA viruses called enteroviruses.HFM is more common among infants and children younger than 5 years.

Other Causes of rash:
o Staphylococcal scalded skin syndrome (SSS)
o
Meningococcal infection:
Bluish/purple splotches, sudden high fever, cills, severe headache, stiff neck and back, and confusion caused by bacterium meningococcus, Neisseria meningitidis.
o
Rocky mountain spotted fever:
Rocky Mountain spotted fever (RMSF)is a fatal tick-borne disease that is classically marked by fever, myalgias, headache, and a petechial rash caused by Rickettsia rickettsii.
o
Systemic Lupus Erythematosus:
A connective tissue disease of unknown cause that occurs chiefly in women characterized by fever, skin rash, arthritis, acute hemolytic anemia, small hemorrhages in the skin and mucous membranes, inflammation of the pericardium, and in serious cases by involvement of the kidneys and central nervous system.
o
Kawasaki Disease:
An acute febrile disease of unknown cause affecting especially infants and children.
o
Erythema Nodosum:
Small tender reddened nodules under the skin, as over the shin bones, accompanied by fever and transitory arthritic pains.
o
Dermatitis herpetiformis:
Eruption of itching papules, vesicles, and lesions resembling hives typically in clusters.
o
Erythema multiforme:
A skin disease characterized by papular or vesicular lesions and reddening or discoloration of the skin often in concentric zones, target shape, about the lesions.
o Folliculitis (Inflammation of one or more follicles especially of the hair)
o
Granuloma annulare:
A benign chronic skin rash marked by one or more flat spreading ring-like spots with lighter centers especially on the feet, legs, hands, or fingers.
o
Hidradenitis suppurativa:
A chronic suppurative inflammatory disease of the apocrine sweat glands.
o
Pemphigus:
Any of several autoimmune skin diseases marked by the formation of successive eruptions of large blisters on apparently normal skin and mucous membranes often in association with sensations of itching or burning.
o
Swimmer's itch:
Itching invasion of the skin by schistosomes that are not normally parasites of humans; called also schistosome dermatitis.
o
Toxic shock syndrome:
Acute ever, nausea, diarrhea, diffuse erythema, and shock associated especially with the presence of a bacterium of the genus Staphylococcus (S. aureus), and that occurs especially in menstruating females using tampons;called also toxic shock.
o
Lyme Disease:
An infectious disease that is usually starts by the skin lesion erythema migrans and fatigue, fever, and chills and if left untreated may later present itself in cardiac and neurological disorders, joint pain, and arthritis. The causative agent is a spirochete of the genus Borrelia (B. burgdorferi) transmitted by the bite of a tick especially of the genus Ixodes; called also Lyme, Lyme borreliosis.
o
Lichen Planus:
A skin disease characterized by wide flat papule eruptions covered by a horny glazed film, and marked by intense itching and lesions on the oral mucosa.
o
Psoriasis:
A chronic skin disease marked by circumscribed red patches covered with white scales.

 

Call 911 or go to the hospital if rash is accompanied by: 
o Sudden high fever, chills, headache, stiff neck
 
Call your doctor if rash is accompanied by: 
o Widespread rash
o Starting a new drug

 
Medications for rash may include: 
o Tacrolimus Ointment (Protopic)
o Hydrocortisone Valerate (Westcort)
o Pimecrolimus (Elidel)
o Diphenhydramine (Benadryl)
   
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