Common causes of rashes include: * Food allergy * Medication side effects * Anxiety * Allergies, for example to food, dyes, medicines, insect stings, metals such as zinc or nickel; such rashes are often called hives. * Skin contact with an irritant * Fungal infection, such as ringworm * Balsam of Peru * Reaction to vaccination * Skin diseases such as eczema or acne * Exposure to sun (sunburn) or heat * Friction due to chafing of the skin * Irritation such as caused by abrasives impregnated in clothing rubbing the skin. The cloth itself may be abrasive enough for some people * Secondary syphilis * Poor personal hygiene Uncommon causes: * Autoimmune disorders such as psoriasis * Lead poisoning * Pregnancy * Repeated scratching on a particular spot * Lyme disease * Scarlet fever *COVID-19 (see ) Conditions Skin disease Symptoms Usual area of body Acne vulgaris Comedones, papules, pustules and nodules. Face, chest and back. Acne rosacea Flushed appearance or redness. Cheeks, chin, forehead or nose. Boil Painful red bump or a cluster of painful red bumps Anywhere Cellulitis Red, tender and swollen areas of skin Around a cut, scrape or skin breach Insect bite Red and/or itchy bumps on the skin Anywhere and can be sprinkled randomly Erythema migrans / Lyme disease Expands over days or weeks to 5–70 cm (median 16 cm), circular or oval, red or bluish, may have an elevated or darker center, may have a central or ring-like clearing, may feel warm, not painful or itchy Armpit, groin, back of knee, on the trunk, under clothing straps, or in children's hair, ear, or neck Allergic reaction Irregular, raised or flat red sores that appeared after taking medicine/drugs or eating certain foods Anywhere Hidradenitis Suppurativa Deep sebum filled cystic condition of apocrine gland overstimulation, caused by many internal and external factors eg, stress, toxic environmental overload and immune impairment. See Hidradenitis. Hives Bumps formed suddenly Anywhere but usually first noticed on face Seborrheic dermatitis Bumps and swelling Near glands Cradle Cap Dry, scaly skin Scalp of recently born babies Irritant contact dermatitis Red, itchy, scaly, or oily rash Eyebrows, nose, edge of the scalp, point of contact with jewellery, perfume, or clothing. Allergic Contact Dermatitis caused by poison ivy, poison oak, sumac, or Balsam of Peru Red, itchy, scaly or oily rash; can also be weeping or leathery. Anywhere that came in contact with the irritant either directly or via transfer (e.g. from contaminated clothing.) Allergic purpura Small red dots on the skin, or larger, bruise-like spots that appeared after taking medicine Anywhere Pityriasis Rosea Started with a single scaly, red and slightly itchy spot, and within a few days, did large numbers of smaller patches of the rash, some red and/or others tan Chest and abdomen Dermatitis herpetiformis Intensely itchy rash with red bumps and blisters Elbows, knees, back or buttocks Erythema nodosum Large red bumps that seem to bruise and are tender to touch Anywhere Psoriasis White, scaly rash over red, flaky, irritated skin Elbows and knees Erythema multiforme Red, blotchy rash, with "target like" hives or sores. Anywhere Measles Red rash that is raised with a fever or sore throat. Usually starts first on the forehead and face and spreads downward. Chickenpox Multiple blisters with a fever, cough, aches, tiredness and sore throat. Usually starts first on the face, chest and back and spreads downward. Shingles Red blisters that are very painful and may crust Anywhere Fifth Disease Started as a fever and then developed a bright red rash Cheeks Warts Soft bumps forming that don't itch and have no other symptoms Anywhere Ringworm Bald spot on the scalp or a ring of itchy red skin Anywhere Syphilis Rash that is red but not itchy Palms of hands or soles of feet Jock itch, yeast infection or diaper rash Red itchy rash Groin Tinea versicolor Light coloured patches Anywhere Impetigo Crusted, tan-colored sores Near nose or lip Scabies Bite-like sores that itch and spread intensely Usually start on hands or feet and spread everywhere Rocky Mountain spotted fever A fine rash with a fever and headache Usually start on arms and legs including the hands and feet Lupus erythematosus A butterfly rash with achy joints Forehead and cheeks Jaundice or sign of hepatitis Yellowish Skin, whites of eyes and mouth Bruise Blue or black area after being hit Anywhere Actinic keratoses Scaly, pink, gray or tan patches or bumps Face, scalp or on the backs or the hands Keloid or hypertrophic scar Scar that has grown larger than expected Anywhere Lipoma Soft or rubbery growth Anywhere Milia Many white spots On the face of a baby Molluscum or contagiosum Small, firm, round bumps with pits in the center that may sit on tiny stalks Anywhere Scarlet fever Becomes confluent and forms bright red lines in the skin creases of the neck, armpits and groins (Pastia's lines) Face, chest and back, whole body, armpits, inside elbows, groins Sebaceous cyst Bump with a white dome under the skin Scalp, nape of the neck or upper back Skin tag Soft, fleshy growth, lump or bump Face, neck, armpits or groin Xanthelasma Yellow area under the skin Under eyelids Melanoma Dark bump that may have started within a mole or blemish, or, a spot or mole that has changed in color, size, shape or is painful or itchy Anywhere Basal cell carcinoma Fleshy, growing mass Areas exposed to the sun Squamous cell carcinoma Unusual growth that is red, scaly or crusted Face, lip or chin Kaposi's sarcoma Dark or black raised spots on the skin that keep growing or have appeared recently Anywhere Erythema annulare centrifugum (EAC) Pink-red ring or bullseye marks Anywhere
symptom of Toxic shock syndrome
symptoms of Toxic shock syndrome
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symptom of Compartment syndrome
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symptom of Carbon monoxide poisoning
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symptom of Cardiogenic shock