Rash: Definition, Types, Symptoms, Common Causes and Treatments

Known simply as a skin rash, it is generally an inflammation of the skin.

It results in changes in the color and texture of the affected area. The skin or body rash could be the effect of irritation, illness, or an allergic reaction. Allergies can be from food, chemicals, plants, animals, insects, or other environmental factors.

This skin rash could affect the whole body or be in a specific area. Rashes on the skin on the back are called back rashes.

Skin rashes generally explain some disorders in the human system. These disorders are usually the cause of the formation of rashes on the skin of any person.

Several reasons could cause a skin rash. The following are some of the common causes of skin rashes.

The rashes are often caused by anxiety, allergy, or other infections. Numerous antigens affect the skin through lymphocytes. If these antigens activate these lymphocytes, they produce chemicals that can cause skin rashes.

For example, when we are allergic to some medicine, the reaction occurs in the skin and the lymphatic glands. Viral infections also cause rashes as the viral particles react with the epidermis or top layer of the skin.


Even though the rash is recognized, all rashes are not the same. The eruptions vary in appearance, time, location or distribution, and duration. These rash symptoms could appear individually or in combination, depending on the cause of the rash.


In general, rashes can be described as:

  • Macular: flat, red spots.
  • Papular: small, raised, solid bumps.
  • Macular and papular: a combination.
  • Papulosquamous – A variety of lumps and scaly areas.
  • Vesicular: small, raised, fluid-filled blisters.

Symptoms of the rash

Some people may experience the following symptoms and related rash signs:

  • Discoloration of the skin.
  • Itch.
  • Bumps on the skin.

If you have a new rash and have a fever or other general illness associated with the inflammation, it would be best to see your doctor. They can also accumulate more significant rash symptoms, for example, wheezing or dangerously low blood pressure.

Hives are very itchy, while other drug-caused rashes are mildly itchy, if at all.

Common causes of rash

  • Infection – An area of ​​the body that has been infected by a virus, bacteria, or fungus can develop a rash. A viral rash can be symmetrical and occur anywhere on the body. Bacterial rashes vary widely in color and shape.
  • Fungal eruptions: These are usually bright red and may not have a border. The cause of the infection will determine treatment.
  • Drug rashes: Some medications can cause a skin rash as a side effect.
  • Psoriasis: Psoriasis is characterized by bumpy, scaly skin that does not cry or ooze. It occurs most often on the knees, elbows, and scalp. The scales will eventually turn silver and fall.
  • Hives: Hives are itchy red bumps that appear suddenly. They usually disappear within eight hours and can reappear frequently.
  • Contact dermatitisContact dermatitis is a skin rash caused by touching a chemical or allergen. Diaper rash and rashes caused by poison oak and poison ivy are examples of contact dermatitis.
  • Seborrheic dermatitisSeborrheic dermatitis is a widespread rash characterized by scaly patches and peeling skin. Dandruff and crib flap are forms of seborrheic dermatitis, although the rash can also occur on the face, neck, and back.
  • Stasis dermatitis: Stasis dermatitis occurs on the lower legs and is caused by poor circulation.

When to seek medical attention for skin rashes.

Many skin rashes will disappear after a few days, and your symptoms can be relieved by using an over-the-counter cream.

If that is not the case, go to our emergency center, especially if you have the following symptoms:

  • Labored breathing
  • A sudden drop in blood pressure
  • Ulcers in the mouth
  • High fever.
  • Pain.

Treatment of rash

Getting rid of a rash with conventional rash treatment always includes a topical ointment or cream that commonly contains over-the-counter and prescription corticosteroids, for example, hydrocortisone.

Long-term use of corticosteroids is known to cause thinning of the skin, among other side effects. Another conventional rash treatment: How to get rid of a rash varies depending on the specific diagnosis of the inflammation.

Other treatments for rash

  • Take an oral antihistamine.
  • Stop using new cosmetics or lotions because they may have caused the rash.
  • Use a good moisturizer to keep your skin hydrated.
  • Avoid scratching the rash because doing so can worsen and lead to an infection.
  • Do not rub the rash dry.
  • Cortisone creams that you can buy over the counter or online can relieve itching.