Nodule (dermatology)

Nodule (dermatology)

A nodule in dermatology is a type of abnormal growth or lump that can appear on the skin. It is typically larger than 1 cm in diameter and can be felt as a hard mass distinct from the skin around it. Nodules can occur in various parts of the body and can be associated with a variety of diseases and skin conditions.

Characteristics

Nodules are typically larger than 1 cm in diameter and can be felt as a hard mass distinct from the skin around it. They can be located in the epidermis, dermis, or subcutaneous tissue. The color, texture, and other characteristics of a nodule can vary depending on the underlying cause.

Causes

Nodules can be caused by a variety of conditions, including infections, inflammatory diseases, neoplasms, and cysts. Some common causes of nodules include acne, rheumatoid arthritis, and cancer.

Diagnosis

The diagnosis of a nodule typically involves a physical examination and may also include biopsies, imaging studies, and other tests. The exact diagnostic process can vary depending on the suspected underlying cause of the nodule.

Treatment

The treatment of nodules depends on the underlying cause. Treatment options may include medications, surgery, and other therapies. In some cases, nodules may resolve on their own without treatment.

See also

• Papule
• Macule
• Skin lesion