Folliculitis Decalvans: What Scalp Tests Can Clarify

If a scalp appointment ends with several sample requests, ask what each is intended to investigate. Write the test names beside the questions they are meant to answer. Keep the results with the dermatologist’s explanation so you can follow how the diagnosis was reached.

Start with the examination

The scalp can develop crusting, pus-filled spots and groups of hairs growing from one follicle, called tufting. Pain or itching can occur, although some people have no discomfort. A dermatologist may use a lighted magnifying device to examine the follicles.¹

Tell the dermatologist when you first noticed changes and whether they have spread. Describe episodes of soreness or discharge you want assessed, including how they have affected washing, styling or sleep. Ask which findings support the proposed diagnosis.

You can bring dated photographs of changes you want to discuss. Ask the clinician to explain what they find on examination and which parts of the assessment still need a test result.

Swabs and fungal samples look for other germs

A skin swab may be sent to a laboratory to check for other germs. Ringworm can look similar, so the dermatologist may also test skin scrapings or plucked hairs for fungal infection.¹

Ask which samples are planned, what the team will do with each result, and how you will hear back. If a test has already been done elsewhere, bring the report and say when and where the sample was collected.

A biopsy examines a small tissue sample

Sometimes a skin biopsy is checked under a microscope to confirm the diagnosis. The sample site is numbed by injection and closed with stitches; a small scar can result.¹

Before agreeing to the procedure, ask where the sample will come from, how to care for the site and who will remove any stitches. Confirm when the result should be available and whether another appointment is already arranged to explain it.

Know what follow-up is trying to achieve

Treatment aims to reduce inflammation and prevent further scarring. Symptoms can return after settling and may require treatment again.¹

Ask how the team will assess the response and which changes should prompt contact before your next appointment. Keep those instructions with the treatment plan, especially if more than one product or medicine has been prescribed.

Hair, Everywhere includes a monthly Hair Log and visit script. Use them to organize the changes and questions you want discussed alongside your dermatologist’s follow-up plan. Explore the hair playbook.