Let's see if we can figure out what's causing your symptoms.
Select additional symptoms and we'll narrow your results.

Your symptoms:
Muscle pain

What causes muscle pain and rash? 26 possible conditions

See a list of possible causes in order from the most common to the least.


Systemic Lupus Erythematosus

Systemic lupus erythematosus (SLE) is an autoimmune disease and the most common type of lupus. One of its common symptoms is a rash on the cheeks and nose called a "butterfly rash."

Read more »



Dermatomyositis is a rare inflammatory disease. It's an inflammatory myopathy, which is a condition that occurs when your muscles become inflamed.

Read more »


Ebola Virus and Disease

This condition is considered a medical emergency. Urgent care may be required.

Ebola disease is a rare, often fatal illness. One of its late-stage symptoms is a bleeding rash over the entire body.

Read more »


Dengue Fever

Dengue fever is a disease that affects much of the tropical region and is caused by one of four dengue viruses. A skin rash between two and five days after the initial fever is a common symptom.

Read more »


Lyme Disease

Lyme disease is an infectious condition transmitted via tick bite. A "bull's eye" rash at the site of the bite is an early symptom of this disease.

Read more »


Colorado Tick Fever

An infected Rocky Mountain Wood tick can spread Colorado tick fever, a viral infection. A faint, occasional rash is one symptom of this condition.

Read more »



Learn about sarcoidosis and its causes, symptoms, diagnosis, treatment, and potential complications.

Read more »


Scarlet Fever

Scarlet fever is an infection that may develop after strep throat. It usually affects children between six and 15 years old. It can cause a rash that consists of small red bumps and feels like sandpaper.

Read more »


MRSA (Staph) Infection

MRSA (methicillin-resistant Staphylococcus) is a type of contagious bacterial infection that is resistant to beta-lactam antibiotics. CA-MRSA typically causes lesions that are red, swollen, and painful to touch.

Read more »


Fifth Disease

Fifth disease is caused by a virus and mostly affects children. The disease is marked by feeling unwell, often followed by a red rash on the cheeks.

Read more »



Measles is a very contagious infection of the respiratory system. One of its several symptoms is a sore or swollen throat.

Read more »



Cellulitis is a common, often painful skin infection that first appears as a red, swollen area that feels hot and tender to the touch. If left untreated, it can become life-threatening.

Read more »



Porphyrias are rare types of genetic blood disorders in which patients have a defect in heme production, an important part of hemoglobin. Blisters are a sign of porphyria cutanea tarda, the most common type of porphyria.

Read more »


German Measles (Rubella)

German measles, also known as rubella, is a rare viral condition. One of its symptoms is a pink rash that begins on the face and spreads downward.

Read more »


Infectious Mononucleosis

Infectious mononucleosis, or "mono," is a group of symptoms caused by the Epstein-Barr virus. One potential symptom is a pink rash that looks like the measles.

Read more »


Adult-Onset Still's Disease

This relatively rare inflammatory condition begins with fever and may lead to arthritis. Women and people between the ages of 16 and 46 are most at risk.

Read more »


The Atypical Facts About Atypical Pneumonia

Pneumonia is an infection that causes inflammation of the lungs. Atypical pneumonia is a kind that isn't caused by the bacteria that causes typical pneumonia.

Read more »



Poliomyelitis, or polio, is a highly contagious disease that is caused by a virus that attacks the body's nervous system. It is most likely to be contracted by children under five years old.

Read more »



Typhus fevers are caused by a bacteria that is transmitted by bites from fleas, ticks, mites, and other arthropods. Rash is a common symptom of typhus.

Read more »


Acute HIV Infection

Acute HIV infection is the primary stage of infection by the human immunodeficiency virus. There are several telltale symptoms, one of which is a rash.

Read more »

This feature is for informational purposes only and should not be used to diagnose.
Please consult a healthcare professional if you have health concerns.