What Is a lesion On The skin? Types, Treatment, And More

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What is a lesion on the skin? Why is my skin so bumpy? Oh dear, we understand your worries and have put together this article to answer those questions.

A skin lesion is an area of the skin that differs significantly from the surrounding skin in terms of growth pattern or appearance.

They show up as bumps or patches and of course, there are many causes of skin lesions

Characteristics such as color, size, texture, and location are indicators to tell if there is an underlying cause.

Types Of Lesions On The Skin

Skin lesions are usually defined as being either primary or secondary.

Primary Lesion

A primary lesion could develop on your skin over time or you could have one from birth.

The cause could be a reaction to external or internal factors or in some cases, it has an underlying cause.

The following are examples of primary lesions:

1. Cyst

It’s a swelling on the skin containing a liquid or semi-solid substance

2. Tumor

It’s above  0.5 cm in diameter but looks like a nodule.

They might be healthy or unhealthy.

3. Bulla

It’s a fluid-filled vesicle having a diameter more than or equal to 1/5 of an inch.

4. Macule

A non-palpable, flat lesion with a different color and a diameter of less than 0.5cm.

5. Papule

A confined and hard raised solid lesion up to 0.5 cm in size. It comes in a variety of hues.

Related: How To Tighten Neck Skin According To Dermatologists

6. Patch

A non-palpable, flat lesion with a different hue and a diameter of more than 0.5 cm.

7. Plaque

Elevated like a papule, firm, rough, and flat-topped with a diameter of more than 1-2 cm.

8. Vesicle

A blister that is smaller than 0.5 cm in diameter and filled with fluid.

9. Pustule

It’s similar to a vesicle, except instead of fluid, it’s filled with pus.

10. Nodule

A solid, round, raised hump of about 0.5 cm in diameter.

11. Wheal

An irregular-formed, solid, raised region that may change in color and is temporary.

12. Telangiectasia

Clusters of ‘spider veins’ where small blood vessels form red streaks on the skin

Secondary Lesions

When a primary skin lesion is agitated, inflamed, or changes over time, secondary skin lesions may develop.

Examples of secondary skin lesions include:

1. Erosion

Loss of the epidermis, wet and shiny in appearance.

2. Excoriation

Linear scrapes that result in the loss of epidermis

3. Fissure

Linear cracks in the skin that penetrate deeper than the epidermis into the dermis. They may be uncomfortable and might be caused by excessive dryness.

4. Lichenification

It’s characterized by a rough, thickening of the epidermis.

5. Maceration

After prolonged exposure to water or other liquids, the skin may get wet, wrinkly, and faded.

This may arise owing to leaky wounds due to a lack of care for the wound.

6. Phyma

A thickening of the skin, frequently found in advanced rosacea.

7. Atrophy

It’s a condition in which the skin becomes paper-thin and wrinkled, often as a result of topical steroids,

8. Crust

A rough, raised region created by dried fluid (which may be pus, blood, or serum) (which can be pus, blood, or serum)

9. Scale

A build-up of keratinized cells that form patches and subsequently peel off the skin

10. Ulcer

A wound deeper than the epidermis, affecting the dermis, concave, changeable in size, and graded based on depth

11. Umbilication

It’s a depression in the skin that resembles a navel in appearance.

What is a lesion on the skin? Causes of skin lesions


Whiteheads, blackheads, pimples, and cysts are all forms of acne.

It may be innocuous for some, but for others, it might lead to scars or poor self-esteem.

Acne arises when the pores in the skin are blocked with dead skin cells and the skin’s natural oil, called sebum.

Bacteria may also seep into the plugged pore, inflaming the sores.

OTC medications containing benzoyl peroxide or salicylic acid may be useful for those with minor acne. You should see visible results between 4-8 weeks of usage.

If acne is more severe or if OTC medications do not help, a person should contact a dermatologist.

Related: Chin Acne Causes, Treatment, and Prevention

Actinic keratosis

Actinic keratosis is induced by exposure to ultraviolet radiation and shows up as thick, scaly crusts on the skin.

It normally doesn’t develop until later in life due to prolonged exposure to sunlight.

Actinic keratosis is frequently easier to feel than see owing to its scaly raised surface.

Over time, it may become hard and wart-like.

Treatment for actinic keratosis might be by freezing (cryosurgery), scraping (curettage), or laser ablation.

There are various topical creams include fluorouracil, diclofenac, and imiquimod for treating actinic keratosis.


Because they are filled with fluid, blisters make your skin look a little different.

Blisters can be caused by friction (for example, when you walk, your shoes rub against each other).

They can also be caused by a burn, skin disorder, or allergic reaction.

It is possible to treat most blisters with a bandage at home, but not all of them.

Try not to pop blisters, and don’t put more pressure on the area where they’re already there, either.

Make sure to clean the area and cover it with a sterile bandage until it’s healed.

If you see pus, fever, or red hot skin around the blister, then see a doctor.

Cold sores

A cold sore is a blister that is red, painful, and filled with fluid. It usually appears near the mouth or lips.

In addition to genital lesions, herpes simplex 1 (HSV-1) and herpes simplex 2 (HSV-2) cause these types of oral lesions.

Before a cold sore is visible, the area where it is will often tingle or burn, and this can be a sign that something is wrong.

These blisters can be on their own or in groups, and they leak clear yellow fluid before they become crusty.

Blisters may come back due to stress, menstruation, illness, or sun exposure.


Cellulitis is a skin illness caused by bacteria or fungus penetrating the skin.

As a result, the skin becomes inflamed, uncomfortable, and prone to fluid leakage.

To put it another way, it’s scalding hot to the touch and may make you feel ill.

Most instances may be treated on an outpatient basis with a course of antibiotics if found early.

See a doctor if it gets too severe.


Allergic eczema makes the skin itchy, red, scaly, or raw. It can also make the skin very dry and itchy.

On the hands and forearms, it can look like a burn, but it isn’t always that way.

It also causes blisters that weep, ooze, or become crusty, as well as a lot of pain.

People with eczema should avoid anything that makes it worse. Bath and moisturize every day.

Use prescribed medicine.

Related: What causes itching of the skin?| Treatment for Itchy Skin


Hives are itchy, raised welts that happen when someone is allergic to something.

It hurts to touch them. They’re red, warm, and a little painful. They’re small and round or big and wacky.


A boil is a red, painful, raised bump with a yellow or white center that is raised.

If you have it, it can show up anywhere on your body. It’s most common on your face, neck, armpit, and back.

It could break and leak fluid.

A boil can be caused by bacterial or fungal growth in the hair follicles.


Impetigo is caused by a Staphylococcus or Streptococcus bacteria infection, which is also known as staph or strep.

People with impetigo have red sores on their skin that are surrounded by red skin. It contains pus.
They become pimples, which then break open and crust over.

Impetigo is very contagious, and it spreads very quickly. You could easily treat them with antibiotics.


Chickenpox, which is also called varicella, is a viral skin infection.

Red, fluid-filled blisters appear on every part of the body and are known to be itchy and hot, as well.

These blisters can leak pus, which can cause more crusting.

Chickenpox is contagious from two days before the rash starts until all the blisters have dried and turned brown.

You can tell if you have chickenpox at home. However, you may want to get medical help to make sure the diagnosis is correct.

There are a lot of lotions and creams that can help with chickenpox until the itching and pain go away.


A nodule is a small to medium-sized growth that may be filled with tissue or both.

It’s usually bigger than a pimple and may look like a bump or bumps under the skin that is firm and smooth.

It’s usually not dangerous, but it can be painful if it touches other parts of your body.

If it’s under our skin, you can’t see or feel it.


In most cases, patches of itchy or scaly skin form.

It is common for the patches to show up on the elbows and knees. However, they can show up on any part of the body, even the scalp.

Scientists don’t know for sure what causes psoriasis right now. There is no cure but there are many ways to treat them.

Some people can use over-the-counter creams and ointments to help them, but others need to take prescription medicine in order to get better.


Scabies causes a very itchy rash that can be pimply, made up of small blisters, or scaly. It can also be very itchy.

It could take 4 to 6 weeks before you start to see signs. You are more likely to get impetigo if you have scabies.

Related: Dry Scalp Treatment: Prescriptions and Home Remedies

Contact Dermatitis

You get contact dermatitis when you come into contact with an allergen or something that causes your skin to be itchy.

As the irritant comes into contact with your body, you may start to feel ill.

It can be red, itchy, macules, papules, blisters, swelling to the touch.

Contact dermatitis forms plaques and they can be hard to remove from the skin.

People with contact dermatitis can keep their skin clean and moisturized to help them get better. You need to stay away from allergen or irritants.

See a doctor if symptoms persist.


Freckles are small, flat, light-brown spots on the skin caused by the sun.

Most freckles aren’t dangerous and don’t usually turn into skin cancer, but there are some that can be dangerous.

People with light skin or red hair are more likely to have them.

Except there’s a risk of cancer, freckles aren’t harmful.


This bump on the skin or inside the mouth is called a wart. It’s raised and rough.

Human papillomavirus causes wart. 

A wart can appear alone or in groups. It’s highly contagious.


If your skin is lumpy or rigid, you may have a keloid. It may be painful or itchy.

The area is red, pink, or flesh-colored.

At the site of a previous skin injury, keloids may show up.


Fungus is what causes ringworm, which is a skin infection that can cause a circle-like rash.

Anywhere on the body can get it, and it usually comes with itchy, red, scaly skin and hair loss.

Ringworm on the feet can be called athlete’s foot, and ringworm on the groin can be called jock itch.

A lot of over-the-counter creams, lotion, and powder can help get rid of ringworm.

The name for ringworm on the scalp is tinea capitis, and it usually needs antifungal medicine.

You’ll see visible results after 3 months of treatment.


A rash is a change in the color or texture of the skin and is visible.

An allergy or a fungal or bacterial skin infection could cause it.

It could be caused by a reaction to the medication, a fungal or bacterial infection.

Many rash symptoms can be treated at home, but severe rashes may need to be treated quickly by a doctor.


People who have chickenpox could have shingles because the varicella-zoster virus that causes chickenpox triggers it.

It is a red rash that is very painful and can break and leak fluid. It is made up of macules, papules, and blisters that can break and leak fluid.

This can cause more crusting.

The itching, burning, and pain caused by the rash can be felt.

A fever, chills, headache, and lethargy may also occur.

It is possible to treat the symptoms of shingles with things you can make at home, such as a cool compress.

You can also talk to your doctor about antihistamines, pain relievers, antivirals, or other prescription drugs.

Skin Tags

You can also call them “acrochordon”. They’re small and skin-colored growths that are soft.

It’s more common in older people.

You don’t have to remove them and they don’t need medical attention unless they are causing cosmetic problems or are in a place that is irritating.

Who’s at risk for skin lesions?

Several skin lesions are passed down from one generation to the next, but not all of them.

People who have moles or freckles in their families are more likely to have hereditary lesions.

Also, folks who have allergies are more likely to get skin lesions because of their allergies.

If you have an autoimmune disease, like psoriasis, you will be at risk of getting skin lesions for the rest of your life.

How are skin lesions diagnosed?

In order to identify a skin lesion, a dermatologist or specialist will do a comprehensive physical exam.

This will entail inspecting the skin lesion and asking for a complete report of any symptoms.

To confirm a diagnosis, they can collect skin samples, conduct a biopsy of the afflicted region, or take a swab from the lesion for a lab test.

How are skin lesions treated?

In treating skin lesions, it is important to determine the underlying cause or reasons.

A doctor will take into consideration the kind of lesion, your particular health history, and any therapies already tried.

Home remedies

There are some skin lesions that can be very itchy and painful so you might want to try some home remedies to get relief.

The itching or burning caused by some skin lesions can be relieved by oatmeal baths or lotions.

In places where the skin rubs against itself or another piece of clothing, absorbent powders and protective balms can reduce friction and stop more skin lesions from forming.

Related: What causes oily skin? 10 Tips To Control Oily Skin


There are usually first-line treatments that are applied to the skin to help with the inflammation and protect the area where it is.

Topical medicine can also help with mild symptoms like pain, itching, or burning caused by the skin lesion.

A person who has chickenpox or shingles may take oral medications to help ease the symptoms of the disease, including the skin lesions, that come with the disease.


Infected skin lesions are usually pierced and drained so that they can be treated.

Suspicious moles that have changed over time can also be surgically removed.

As for hemangioma caused by malfunctioning blood vessels, laser treatment is administered.


If you notice an unusual growth on your skin, chances are it’s a skin lesion.

These lesions can be treated in various ways. Make sure you contact a dermatologist for diagnosis, then follow the recommended treatment options.

If you have questions about this article? Kindly drop it in the comment box below, we will be happy to help you.

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