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Healthy skin provides a barrier between the inside of the body and the outside environment. A rash means that some change has affected the skin.
In many cases, rashes are caused by skin irritation, which can have many causes. A rash is often a minor problem that may go away with home treatment. But sometimes a rash doesn't go away, or the skin may get so irritated that medical care is needed.
In adults and older children, rashes are often caused by contact with a substance that irritates the skin (contact dermatitiscontact dermatitis). Contact dermatitis may cause mild redness of the skin or a rash of small red bumps. A more severe reaction may cause swelling, redness, and larger blisters. The location of the rash may give you a clue about the cause.
Contact dermatitis doesn't always occur the first time you are in contact with the irritating substance (allergenallergen). After you've had a reaction to the substance, a rash can occur in response to even very small amounts of the substance. Contact dermatitis isn't serious, but it's often very itchy. Common causes include:
Poisonous plants, such as poison ivy, oak, or sumacpoison ivy, oak, or sumac.
Soaps, detergents, shampoos, perfumes, cosmetics, or lotions.
Jewelry or fabrics.
New tools, toys, appliances, or other objects.
Latex. Allergy to natural rubber latex affects people who are exposed to rubber products on a regular basis. It's often seen in health care workers, rubber industry workers, and people who've had multiple surgeries. Latex allergies can cause a severe reaction.
Rashes may occur with:
Viral infections, such as herpes zosterherpes zoster.
Fungal infections, such as a yeast infection (Candida albicans).
Rashes may also occur as a symptom of a more serious disease, such as liver disease, kidney disease, or some types of cancer.
Rashes may appear after exposure to an insect or a parasite, such as the scabiesscabies mite. You may get a rash when you travel to a rural area or go hiking or camping in the woods.
A rash may be a sign of a chronic skin problem, such as acneacne, eczemaeczema, psoriasispsoriasis, or seborrheic dermatitisseborrheic dermatitis. Other causes of rashes include dry, cold weather; extremely hot weather (heat rash); and emotional stress.
Some medicines can cause a rash as a side effect. A very rare and serious type of generalized (whole-body) red rash called toxic epidermal necrolysis (TEN). TEN can cause the skin to peel away, leaving large areas of tissue that weep or ooze fluid like a severe burn. TEN may occur after the use of some medicines. If this type of rash occurs, you need to see a doctor.
The need for medical treatment often depends on what other symptoms you have. A rash that occurs with other symptoms, such as shortness of breath or fever, may mean another problem, such as a serious allergic reactionallergic reaction or infection.
Check Your Symptoms
Check Your Symptoms
Do you have a rash? Review health risks that may make any symptom more serious.
Yes
Rash
No
Rash
How old are you?
Less than 12 years
Less than 12 years
12 years or older
12 years or older
Are you male or female?
Male
Male
Female
Female
The medical assessment of symptoms is based on the body parts you have.
If you are transgender or nonbinary, choose the sex that matches the body parts (such as ovaries, testes, prostate, breasts, penis, or vagina) you now have in the area where you are having symptoms.
If your symptoms aren’t related to those organs, you can choose the gender you identify with.
If you have some organs of both sexes, you may need to go through this triage tool twice (once as "male" and once as "female"). This will make sure that the tool asks the right questions for you.
Do you have a tick bite?
Yes
Tick bite
No
Tick bite
Have you been bitten or stung by an insect or spider?
Yes
Insect or spider bite or sting
No
Insect or spider bite or sting
Do you have symptoms of shocksymptoms of shock?
Yes
Symptoms of shock
No
Symptoms of shock
Could you be having a severe allergic reactionsevere allergic reaction?
This is more likely if you have had a bad reaction to something in the past.
Yes
Possible severe allergic reaction (anaphylaxis)
No
Possible severe allergic reaction (anaphylaxis)
Do you have any abnormal bleedingabnormal bleeding?
Yes
Abnormal bleeding
No
Abnormal bleeding
Do you feel lightheaded or dizzy, like you are going to faint?
It's normal for some people to feel a little lightheaded when they first stand up. But anything more than that may be serious.
Yes
Feels faint
No
Feels faint
Are you bleeding now?
Yes
Abnormal bleeding now present
No
Abnormal bleeding now present
Are there any symptoms of infectionsymptoms of infection?
Yes
Symptoms of infection
No
Symptoms of infection
Are there red streaks leading away from the area or pus draining from it?
Yes
Red streaks or pus
No
Red streaks or pus
Do you have diabetes, a weakened immune systemweakened immune system, peripheral arterial disease, or any surgical hardware in the area?
"Hardware" includes things like artificial joints, plates or screws, catheters, and medicine pumps.
Yes
Diabetes, immune problems, peripheral arterial disease, or surgical hardware in affected area
No
Diabetes, immune problems, peripheral arterial disease, or surgical hardware in affected area
Do you think you may have a fever?
Yes
Possible fever
No
Possible fever
Did you take your temperature?
Yes
Temperature taken
No
Temperature taken
How high is the fever? The answer may depend on how you took the temperaturehow you took the temperature.
NOTE: Most people have an average body temperature of about 98.6°F (37°C). But it can vary by a degree or more and still be considered normal. If a low body temperature is your only symptom, it’s usually not something to worry about. But be sure to watch for other symptoms.
High: 104°F (40°C) or higher, oral
High fever: 104°F (40°C) or higher, oral
Moderate: 100.4°F (38°C) to 103.9°F (39.9°C), oral
Moderate fever: 100.4°F (38°C) to 103.9°F (39.9°C), oral
Mild: 100.3°F (37.9°C) or lower, oral
Mild fever: 100.3°F (37.9°C) or lower, oral
How highHow high do you think the fever is?
High
Feels fever is high
Moderate
Feels fever is moderate
Mild or low
Feels fever is mild
How long have you had a fever?
Less than 2 days (48 hours)
Fever for less than 2 days
At least 2 days but less than 1 week
Fever for at least 2 days but less than 1 week
1 week or more
Fever for 1 week or more
Do you have a rash that looks like a sunburn?
Yes
Sunburn-like rash
No
Sunburn-like rash
Do you have a health problem or take medicine that weakens your immune systemweakens your immune system?
Yes
Disease or medicine that causes immune system problems
No
Disease or medicine that causes immune system problems
Do you have symptoms of a serious illnesssymptoms of a serious illness?
Yes
Symptoms of serious illness
No
Symptoms of serious illness
Have tiny red or purple spots or bruisesred or purple spots or bruises appeared suddenly?
Yes
Sudden appearance of red or purple spots or bruising
No
Sudden appearance of red or purple spots or bruising
Does the rash cover:
A rash that covers most of the body is on both sides of the body and on most of the legs, arms, back, or belly. A rash in one area may be just one small patch. Or it may be two or three small patches that cover a small area.
Most of the body?
Rash is all over the body
Or is it in one area?
Rash is in one area of the body
Is the rash a red, peeling rash that leaves very large areas raw and oozing fluid?
Yes
Red, peeling rash with large areas that are raw and ooze fluid
No
Red, peeling rash with large areas that are raw and ooze fluid
Do you have a sore throat?
Certain illnesses can cause a rash and a sore throat. You may need to be seen sooner if you have both.
Yes
Sore throat
No
Sore throat
Are there sores or a rash in the genital area, inside the mouth or nose, or in the eyes?
Yes
Rash or sores in the genital area, mouth, nose, or eyes
No
Rash or sore in the genital area, mouth, nose, or eyes
Have you had a skin sore or ulcer for more than a week?
Yes
Skin sore or ulcer for more than 1 week
No
Skin sore or ulcer for more than 1 week
Do you have a new rash in the shape of a band or a strip on just one side of the body?
Yes
New band-shaped rash on one side
No
New band-shaped rash on one side
Do you think that a medicinemedicine or a vaccine could be causing the rash?
Think about whether the rash appeared after you began using a new medicine or a higher dose of a medicine. Or did it start after you got a shot or vaccine?
Yes
Medicine may be causing rash
No
Medicine may be causing rash
Is the rash itchy?
Yes
Itchy rash
No
Itchy rash
Is the itching severe?
Severe means that you are scratching so hard that your skin is cut or bleeding.
Yes
Severe itching
No
Severe itching
Has the itching interfered with sleeping or normal activities for more than 2 days?
Yes
Itching has disrupted sleep or normal activities for more than 2 days
No
Itching has disrupted sleep or normal activities for more than 2 days
Does the rash hurt?
Yes
Painful rash
No
Painful rash
Have you had the rash for more than 2 weeks?
Yes
Rash for more than 2 weeks
No
Rash for more than 2 weeks
Many things can affect how your body responds to a symptom and what kind of care you may need. These include:
Your age. Babies and older adults tend to get sicker quicker.
Your overall health. If you have a condition such as diabetes, HIV, cancer, or heart disease, you may need to pay closer attention to certain symptoms and seek care sooner.
Medicines you take. Certain medicines, such as blood thinners (anticoagulants), medicines that suppress the immune system like steroids or chemotherapy, herbal remedies, or supplements can cause symptoms or make them worse.
Recent health events, such as surgery or injury. These kinds of events can cause symptoms afterwards or make them more serious.
Your health habits and lifestyle, such as eating and exercise habits, smoking, alcohol or drug use, sexual history, and travel.
Try Home Treatment
You have answered all the questions. Based on your answers, you may be able to take care of this problem at home.
Try home treatment to relieve the symptoms.
Call your doctor if symptoms get worse or you have any concerns (for example, if symptoms are not getting better as you would expect). You may need care sooner.
Sudden tiny red or purple spots or sudden bruising may be early symptoms of a serious illness or bleeding problem. There are two types.
Petechiae (say "puh-TEE-kee-eye"):
Are tiny, flat red or purple spots in the skin or the lining of the mouth.
Do not turn white when you press on them.
Range from the size of a pinpoint to the size of a small pea and do not itch or cause pain.
May spread over a large area of the body within a few hours.
Are different than tiny, flat red spots or birthmarks that are present all the time.
Purpura (say "PURR-pyuh-ruh" or "PURR-puh-ruh"):
Is sudden, severe bruising that occurs for no clear reason.
May be in one area or all over.
Is different than the bruising that happens after you bump into something.
If you're not sure if a fever is high, moderate, or mild, think about these issues:
With a high fever:
You feel very hot.
It is likely one of the highest fevers you've ever had. High fevers are not that common, especially in adults.
With a moderate fever:
You feel warm or hot.
You know you have a fever.
With a mild fever:
You may feel a little warm.
You think you might have a fever, but you're not sure.
Temperature varies a little depending on how you measure it. For adults and children age 12 and older, these are the ranges for high, moderate, and mild, according to how you took the temperature.
Oral (by mouth) temperature
High: 104°F (40°C) and higher
Moderate: 100.4°F (38°C) to 103.9°F (39.9°C)
Mild: 100.3°F (37.9°C) and lower
A forehead (temporal) scanner is usually 0.5°F (0.3°C) to 1°F (0.6°C) lower than an oral temperature.
Ear temperature
High: 105°F (40.6°C) and higher
Moderate: 101.4°F (38.6°C) to 104.9°F (40.5°C)
Mild: 101.3°F (38.5°C) and lower
Armpit (axillary) temperature
High: 103°F (39.5°C) and higher
Moderate: 99.4°F (37.4°C) to 102.9°F (39.4°C)
Mild: 99.3°F (37.3°C) and lower
Certain health conditions and medicines weaken the immune system's ability to fight off infection and illness. Some examples in adults are:
Diseases such as diabetes, cancer, heart disease, and HIV/AIDS.
Long-term alcohol and drug problems.
Steroid medicines, which may be used to treat a variety of conditions.
Chemotherapy and radiation therapy for cancer.
Other medicines used to treat autoimmune disease.
Medicines taken after organ transplant.
Not having a spleen.
Abnormal bleeding means any heavy or frequent bleeding or any bleeding that is not normal for you. Examples of abnormal bleeding include:
Nosebleeds.
Vaginal bleeding that is different (heavier, more frequent, at a different time of month) than what you are used to.
Rectal bleeding and bloody stools.
Bloody or pink urine.
Gums that bleed easily when you eat or gently brush your teeth.
When you have abnormal bleeding in one area of your body, it's important to think about whether you have been bleeding anywhere else. This can be a symptom of a more serious health problem.
Symptoms of serious illness may include:
A severe headache.
A stiff neck.
Mental changes, such as feeling confused or much less alert.
Extreme fatigue (to the point where it's hard for you to function).
Shaking chills.
Symptoms of infection may include:
Increased pain, swelling, warmth, or redness in or around the area.
Red streaks leading from the area.
Pus draining from the area.
A fever.
Shock is a life-threatening condition that may quickly occur after a sudden illness or injury.
Adults and older children often have several symptoms of shock. These include:
Passing out (losing consciousness).
Feeling very dizzy or lightheaded, like you may pass out.
Feeling very weak or having trouble standing.
Not feeling alert or able to think clearly. You may be confused, restless, fearful, or unable to respond to questions.
Many prescription and nonprescription medicines can cause a rash. A few common examples are:
Antibiotics.
Aspirin, ibuprofen (Advil, Motrin), and naproxen (Aleve).
Pain medicines, such as codeine.
Seizure medicines.
Symptoms of a severe allergic reaction (anaphylaxis) may include:
The sudden appearance of raised, red areas (hives) all over the body.
Rapid swelling of the throat, mouth, or tongue.
Trouble breathing.
Passing out (losing consciousness). Or you may feel very lightheaded or suddenly feel weak, confused, or restless.
Severe belly pain, nausea, vomiting, or diarrhea.
A severe reaction can be life-threatening. If you have had a bad allergic reaction to a substance before and are exposed to it again, treat any symptoms as an emergency. Even if the symptoms are mild at first, they may quickly become very severe.
Seek Care Today
Based on your answers, you may need care soon. The problem probably will not get better without medical care.
Call your doctor or telehealth provider today to discuss the symptoms and arrange for care.
If you cannot reach your doctor or telehealth provider or you don't have one, seek care today.
If it is evening, watch the symptoms and seek care in the morning.
If the symptoms get worse, seek care sooner.
What are your options for medical care?
Today your options for where to get your medical care are greater than ever before. You may not even have to leave your home to get the care you want and need. You can choose based on what your health problem is and what works best for you.
Telehealth is a video call with a health care provider. It can be a convenient way to get medical advice or treatment. Some insurers provide access to telehealth that may be available 24 hours a day. Telehealth for less serious problems may cost less and be faster than in-person clinic visits.
Urgent care and retail clinics are options if you don't have a doctor, you can't or don't want to wait to see your own doctor, or a telehealth visit can’t treat the problem.
Virtual care from your primary provider or a telehealth service can be delivered through your smartphone, computer, or tablet.
Based on your answers, the problem may not improve without medical care.
Make an appointment to see your doctor in the next 1 to 2 weeks, or contact your telehealth provider.
If appropriate, try home treatment while you are waiting for the appointment.
If symptoms get worse or you have any concerns, call your doctor or telehealth provider. You may need care sooner.
What are your options for medical care?
Today your options for where to get your medical care are greater than ever before. You may not even have to leave your home to get the care you want and need. You can choose based on what your health problem is and what works best for you.
Telehealth is a video call with a health care provider. It can be a convenient way to get medical advice or treatment. Some insurers provide access to telehealth that may be available 24 hours a day. Telehealth for less serious problems may cost less and be faster than in-person clinic visits.
Urgent care and retail clinics are options if you don't have a doctor, you can't or don't want to wait to see your own doctor, or a telehealth visit can’t treat the problem.
Virtual care from your primary provider or a telehealth service can be delivered through your smartphone, computer, or tablet.
Based on your answers, you may need care right away. The problem is likely to get worse without medical care.
Call your doctor now to discuss the symptoms and arrange for care.
If you cannot reach your doctor or you don't have one, seek care in the next hour.
You do not need to call an ambulance unless:
You cannot travel safely either by driving yourself or by having someone else drive you.
You are in an area where heavy traffic or other problems may slow you down.
Call 911 Now
Based on your answers, you need emergency care.
Call 911 or other emergency services now.
Sometimes people don't want to call 911. They may think that their symptoms aren't serious or that they can just get someone else to drive them. Or they might be concerned about the cost. But based on your answers, the safest and quickest way for you to get the care you need is to call 911 for medical transport to the hospital.
Insect Bites and Stings and Spider Bites
Tick Bites
Rash, Age 11 and Younger
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C undefined R 14.4.0.0
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Self-Care
Self-Care
Most rashes will go away without medical treatment. Home treatment can often relieve pain and itching until the rash goes away.
After a rash appears, leave it alone as much as you can.
Use soap and water sparingly.
Leave the rash exposed to the air when you can.
Don't scratch the rash.
But if you have come in contact with a substance such as poison ivy, oak, or sumacpoison ivy, oak, or sumac, wash the area with a lot of water right away. If you can, use liquid dish soap or a mild soap and very warm running water.
If you have a rash, you should not be in contact with children or anyone who is pregnant. Most viral illnesses that cause a rash are contagious, especially if you also have a fever.
Relief from itching
Try these tips to help relieve itching from a rash.
Keep the itchy area cool and moist.
Put cloths soaked in ice water on the rash a few times a day. Too much wetting and drying will dry the skin, which can increase itching.
Keep cool, and stay out of the sun.
Heat makes itching worse.
Add a handful of oatmeal (ground to a powder) to your bath.
Or you can try an oatmeal bath product, such as Aveeno.
Avoid scratching as much as you can.
Scratching leads to more scratching. Cut nails short or wear cotton gloves at night to prevent scratching.
Wear cotton clothing.
Don't wear wool and synthetic fabrics next to your skin.
Use gentle soaps on your skin.
Examples are Basis, Cetaphil, Dove, and Oil of Olay. Use as little soap as you can. Don't use deodorant soaps.
Wash your clothes with a mild soap, rather than a detergent.
Try using ones like CheerFree or Ecover. Rinse twice to remove all traces of the soap. Don't use strong detergents.
Don't let the skin get too dry.
Dry skin may make itching worse.
Try nonprescription medicines for itching.
Carefully read and follow all label directions on the medicine bottle or box.
Try calamine lotion for a rash caused by contact dermatitiscontact dermatitis, such as poison ivy or poison oak rashes.
For severe itching from contact dermatitis, apply hydrocortisone cream 4 times a day until the itch is gone. But don't use this cream on a fungal rash, because it can make the rash worse.
If itching affects your sleep, ask your doctor if you can take an antihistamine that might reduce itching and make you sleepy, such as diphenhydramine (Benadryl). Be safe with medicines. Read and follow all instructions on the label.
Take breaks.
Take several breaks during the day to do a relaxation exercise if stress appears to cause your itching or make it worse. In particular, do it before you go to bed. Sit or lie down, and try to clear your mind. Manage your stress by relaxing every muscle in your body, starting with your toes and going up to your head. Doing this may help your symptoms.
When to call for help during self-care
Call a doctor if any of the following occur during self-care at home:
New or worse signs of infection, such as warmth, redness, swelling, pus, or a fever.
Symptoms occur more often or are more severe.
Learn more
Over-the-counter medicines
AcetaminophenAcetaminophen
Aspirin for Pain, Fever, and InflammationAspirin for Pain, Fever, and Inflammation
Clinical Review BoardClinical Review Board All Ignite Healthwise, LLC education is reviewed by a team that includes physicians, nurses, advanced practitioners, registered dieticians, and other healthcare professionals.
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