A Visual Guide to 20 Different Types of Raised Skin Bumps You May Notice on Your Body

Let’s face it, everyone has experienced noticing a sudden bump on their skin and immediately rushing to look it up online, wondering 'What could this be?' It’s a natural reaction to see something new or unusual on your body and worry about what it might signify.

Most of the time, these raised spots turn out to be nothing serious—like a bug bite or a harmless pimple. Still, there are types of skin bumps that, while not necessarily dangerous, can be bothersome or confusing to handle. Ignoring them for too long could lead to discomfort or complications that might require professional care.

To help you navigate this common dilemma, experts in dermatology have shared detailed insights into various skin bumps you might find, explaining why they appear and what kind of treatments or actions you might consider, if any.

Actinic keratoses are rough, scaly patches that usually develop on sun-exposed areas like the face, ears, lips, arms, chest, neck, and hands. They’re considered precancerous, meaning they can potentially turn into a type of skin cancer called squamous cell carcinoma if left untreated. These areas mainly develop due to long-term exposure to ultraviolet (UV) rays from the sun.

If you notice these patches, a dermatologist can evaluate them and often treat them with simple procedures like cryotherapy, which uses freezing to remove the lesions, or prescribe specialized topical medications. Taking action early not only clears the bumps but also reduces any cancer risk associated with them.

On the other hand, calluses are thickened skin areas that usually show up on your hands or feet. These spots develop due to repeated pressure, irritation, or friction—imagine how your skin responds to the constant rubbing from shoes or manual work.

Treating calluses can be straightforward: regularly using a pumice stone to gently exfoliate the thick skin helps keep calluses under control. It's also helpful to wear properly fitting footwear or gloves to minimize additional pressure that can cause or worsen them.

Acne is one of the most familiar skin conditions and shows up in multiple forms such as whiteheads, blackheads, pimples, nodules, and cysts. These arise when oil and dead skin cells accumulate inside pores. For blackheads, the pore opening remains open, causing oxidation and the characteristic dark color. Pimples happen when bacteria multiply in trapped oil and skin cells, leading to redness and swelling. Nodules and cysts represent deeper, more severe inflammations under the skin.

Managing acne effectively usually involves topical treatments that reduce bacteria and unclog pores. Ingredients like salicylic acid, commonly found in cleansers and toners, can help keep pores clean and clear.

Ingrown hairs show up as small, red, inflamed bumps and occur when hairs curve back and grow into the skin instead of outward. This often happens after shaving or waxing. Addressing ingrown hairs generally involves carefully extracting the trapped hair with clean tweezers, followed by applying an over-the-counter antibiotic ointment to prevent infection and soothe the area.

Skin tags are soft, fleshy growths that most often pop up around areas like the neck and under the arms. Though the exact cause isn’t fully known, genetics seem to play a role, with a higher chance of developing skin tags if you're overweight or have diabetes.

While skin tags are harmless, they can sometimes interfere with your daily life, catching on jewelry or clothing. If that happens, dermatologists can safely remove them through simple procedures.

Seborrheic keratoses are benign bumps that often appear as skin-colored or brown, wart-like growths. They typically develop on the chest, back, arms, and around the bra line, and although harmless, they can sometimes grow larger or become itchy and inflamed.

Most people develop seborrheic keratoses as they age. Dermatologists can freeze these bumps off with liquid nitrogen or use FDA-approved treatments such as Eskata to reduce their appearance.

Blisters happen when fluid accumulates between layers of the skin, often due to friction like from new or tight shoes rubbing on your feet. They can be painful and sometimes appear as a single blister or clusters. For example, clusters of blisters on the lips might indicate cold sores.

Cold sores are caused by the herpes simplex virus type 1 (HSV-1) and typically begin as painful clusters of blisters around the lips. The virus remains dormant in your body and can reactivate due to triggers like stress or illness. Cold sores are contagious and can spread through close contact, such as kissing or sharing items like cups or lip products.

Early treatment is important to reduce spreading. Antiviral medications prescribed by a dermatologist are the primary treatment, with over-the-counter topical drying agents available to help manage symptoms until professional care is accessible.

Warts are rough, skin-colored bumps caused by a highly contagious infection with the human papillomavirus (HPV). They often show up on the hands and fingers but can occur anywhere. Dermatologists typically treat warts with cryotherapy, freezing them off.

Boils are painful, pus-filled infections of hair follicles that develop rapidly compared to cysts. They usually occur as single, swollen lumps caused by bacteria, which may spread from the nose or other areas with high bacteria levels. Frequent boils might require specialized treatment including topical antibiotics in the nasal area to prevent recurrence.

Treating boils typically involves visiting a dermatologist who can safely drain the infection and prescribe oral antibiotics to clear it up.

Epidermoid cysts are often described as small, balloon-like sacs filled with material just beneath the skin surface. They develop from deeply blocked pores. Dermatologists may use cortisone injections to reduce inflammation and size, which helps avoid the need for surgical removal. However, large cysts causing discomfort might require surgical excision.

It’s important to know that acne cysts differ from epidermoid cysts as acne cysts lack a capsule and represent a cluster of cells that respond well to cortisone injections.

Hives, or urticaria, are itchy, swollen, red bumps that surface as part of allergic reactions. They can appear suddenly due to triggers like certain foods, medications, or insect stings. Hives can sometimes indicate a severe allergic reaction called anaphylaxis, which is a medical emergency requiring immediate attention.

You can usually manage mild hives with over-the-counter antihistamines and topical creams containing cortisone to relieve itching and swelling. It’s helpful to avoid foods that commonly trigger hives, such as shellfish and nuts. Persistent hives should be evaluated by an allergist to help pinpoint the cause.

Contact dermatitis, which can cause clusters of blisters along with redness and peeling skin, occurs when your skin directly touches an allergen like soap, perfume, detergents, fabrics, or metals such as nickel in jewelry. Poison ivy is another common culprit causing this reaction.

For mild cases, home treatment with antihistamines and hydrocortisone cream can be effective. However, extensive or severe contact dermatitis requires professional evaluation for more advanced treatments.