What Do They Do at a Dermatologist Appointment?

A dermatologist appointment is a preventative measure and a means of diagnosis for conditions affecting the skin, hair, and nails. Dermatologists are medical doctors specializing in these areas, providing care for issues ranging from rashes and acne to skin cancers. Regular check-ups are beneficial for early detection of potential problems, particularly skin cancer, where prompt action can significantly improve outcomes.

Preparing for the Appointment

Maximizing the time spent with the provider begins with thorough preparation. Patients should compile a comprehensive list of all current medications, including prescription drugs, supplements, and vitamins, as these can impact skin health or interact with treatments. Documenting any personal or family history of skin cancer or chronic conditions like psoriasis or eczema is also helpful, providing context about potential risk factors.

Patients should arrive without makeup, heavy moisturizers, or nail polish, as these can obscure subtle skin changes, lesions, or prevent examination of the nail beds. Wearing loose-fitting, easily removable clothing is advisable, as a complete skin check often requires changing into a medical gown. Jotting down a list of specific concerns, such as a changing mole or persistent rash, ensures no issue is overlooked during the consultation.

The Comprehensive Skin Exam

The core component of a routine visit is the comprehensive skin exam, often called a full-body skin check. After history taking, the patient changes into a gown so the dermatologist can visually inspect the skin from head to toe. This systematic process involves checking areas often missed during self-examinations, including the scalp, behind the ears, between the toes, and the genital area. The examination typically takes ten to twenty minutes, focusing on identifying any unusual growths, moles, or lesions.

The dermatologist uses a bright light and a specialized handheld magnification tool called a dermatoscope to examine spots closely. This instrument uses polarized light to visualize structures beneath the skin, helping differentiate harmless lesions from potentially cancerous ones. The provider assesses moles using the “ABCDE” criteria: Asymmetry, irregular Borders, multiple Colors, a large Diameter (greater than 6mm), and signs of Evolution or change over time. Early detection of atypical nevi or skin cancers is the primary goal of this visual screening.

Diagnostic Tests and In-Office Procedures

If the visual examination reveals a suspicious lesion or condition, the dermatologist may perform an in-office procedure for diagnosis or immediate treatment. A frequent intervention is a skin biopsy, which involves removing a small tissue sample for microscopic analysis. The type of biopsy depends on the lesion: a shave biopsy skims the top layers of the skin; a punch biopsy removes a deeper, cylindrical core of tissue, often requiring stitches; and an excisional biopsy removes the entire lesion along with a margin of normal skin.

Cryotherapy is another common procedure, utilizing liquid nitrogen to freeze and destroy abnormal skin tissue. It is often used for treating warts, skin tags, or precancerous actinic keratoses. The cold temperature causes localized cell death, and the treated area eventually scabs and falls off. Minor surgical excisions are also performed to completely remove benign growths like cysts or lipomas, or confirmed skin cancers. For non-cancerous issues, the dermatologist may take a skin scraping to collect surface cells and test for fungal infections or scabies using a potassium hydroxide (KOH) preparation.

Treatment Planning and Next Steps

Following the examination, the dermatologist discusses findings and preliminary diagnoses with the patient, explaining the nature of the condition (benign, inflammatory, or malignant) and detailing the recommended course of action. If a biopsy was performed, the provider discusses the timeline for receiving pathology results.

A personalized treatment plan is then outlined, which might include prescription topical medications (such as steroid creams or retinoids) or oral medications for conditions like severe acne or chronic inflammation. The dermatologist provides patient education, covering proper application techniques and necessary lifestyle modifications, such as sun protection. The appointment concludes with scheduling a follow-up visit to monitor treatment response, review results, or perform subsequent procedures.