Several conditions can cause lumps and bumps to form below the skin or on its surface, such as cherry angiomas, skin cysts, epidermoid cysts, keratosis pilaris and folliculitis, according to WebMD. Skin bumps can also re... More » Health Conditions & Diseases

According to Healthline, small red bumps on the skin can signify acne or allergic eczema. Red bumps can also indicate scabies, scarlet fever or skin cancer, so it is always best for individuals with unusual bumps on the ... More » Health Pain & Symptoms

Small, itchy bumps on the skin can be either keratosis pilaris or folliculitis, according to Mayo Clinic. It is not always necessary to see a doctor about this condition unless it is severe. More » Health Conditions & Diseases Skin Conditions

Keratosis pilaris is a skin disorder that causes rough patches and small, acne-like bumps on the skin, according to Mayo Clinic. It affects the skin especially on the thighs, cheeks, arms and buttocks, but this condition... More »

Scalp sores, bumps or blisters may be caused by folliculitis, impetigo, contact dermatitis, viral infections or skin conditions, such as acne, according to eMedicineHealth. Sebaceous or epidermal cysts and skin cancer ma... More » Health Conditions & Diseases Skin Conditions

Leprosy does not have stages, but signs that a person has leprosy include pale-colored skin sores, bumps or lumps that do not disappear after many weeks or months, according to WebMD. Leprosy may also cause nerve damage,... More »

Prurigo nodularis is a health condition that causes itchy, hard and crusty lumps to develop on the surface of the skin, as stated by the American Osteopathic College of Dermatology. Itching caused by prurigo nodularis ca... More » Health Conditions & Diseases