Mole on Scalp: Why You Can't See It and How to Check

The scalp has the same density of moles and the same melanoma risk as the rest of sun-exposed skin, but it has unique visibility challenges. You cannot see your own scalp without two mirrors or another person. Hair covers most of the surface most of the time. Even when hair is parted, only narrow strips of skin are visible.

Scalp melanoma carries roughly 1.5-2x worse survival than melanoma at most other sites, almost entirely because of delayed diagnosis. The cancer is not biologically more aggressive on the scalp; it is just caught later because nobody is looking until it grows large enough to be felt or noticed by a hairdresser.

Men with thinning hair or full baldness have higher scalp melanoma rates than men with full hair coverage, because the scalp gets direct UV exposure. Women have lower scalp melanoma rates partly because of hair coverage but also because of styling-related self-monitoring (combing, parting, hair appointments).

Two-mirror method: stand with a full-length mirror behind you and hold a hand mirror in front, angled to reflect the back of your head. Comb hair into systematic sections (top, sides, back, around the ears) and examine each section under good light.

Partner method: ask someone to part your hair section by section while you look in a mirror or while they describe what they see. A spouse, family member, or close friend can do this in 5-10 minutes monthly.

Hairdresser as first responder: many scalp moles are first noticed by hairdressers, who see the scalp regularly under bright salon lighting. Tell your hairdresser to flag anything unusual — a new mole, a changing one, a non-healing spot. They are often the first to notice.

Dermatology check: at annual or 6-monthly skin checks, the dermatologist examines the scalp directly. Tell them to check thoroughly, especially if you have hair thinning, heavy sun exposure, or a history of scalp issues.

Most scalp moles are benign — congenital nevi (present since childhood), acquired nevi (developed in adolescence), or seborrheic keratoses (waxy 'stuck-on' growths in older adults). Many people have several scalp moles they have never seen.

Key distinguishing features:

Benign mole: stable for years, soft to the touch, uniform pigmentation, smooth or slightly raised, hair often grows through it normally.

Seborrheic keratosis: waxy 'stuck-on' appearance, brown or tan, rough surface, common in adults over 40. Benign but sometimes confused with melanoma.

Melanoma: any scalp mole that has changed (size, colour, shape), bleeds, scabs and won't heal, feels firm and growing, or is the 'ugly duckling' compared to your other scalp moles.

A non-healing scab on the scalp. The most common scalp cancer presentation. People often blame this on dry scalp, dandruff, or 'scratching too hard.' If a scab on the scalp has persisted for more than 4 weeks without healing, see a dermatologist.

A mole that bleeds during normal hair washing or combing. The mole may be invisible to your eye but produce visible blood on the comb or pillow. Spontaneous bleeding from a scalp lesion is one of the most reliable melanoma warning signs.

A mole that has grown enough to feel like a bump under your fingertip. New raised lesions on the scalp deserve evaluation, especially if they have appeared in the past year.

Asymmetric pain, tenderness, or itching at one specific scalp location.

Hair loss in a small specific area around a mole (alopecia at a melanoma site can occur).

Male pattern baldness or thinning hair (more direct UV exposure).

Fair skin (Fitzpatrick I-II).

History of significant outdoor work or recreation without hat coverage.

Frequent sunburns of the scalp in summer (the burn pattern in thinning hair).

Prior melanoma anywhere on the body.

Family history of melanoma.

Immunosuppression.

If you are bald or have thinning hair: SPF 50 sunscreen on the scalp daily, hat or UPF cap during outdoor exposure, and 6-monthly dermatology exams (instead of annual) are reasonable adjustments. Scalp melanoma is preventable with the same tools that prevent melanoma elsewhere; the only added requirement is awareness.

Within 1-2 weeks if any:

A scab on the scalp has not healed in 4 weeks.

New raised lesion that has grown over the past month.

A mole bleeds during normal hair washing or combing without injury.

Personal melanoma history and any new scalp lesion.

Within 4 weeks if any:

New scalp mole noticed in the past few months that you cannot fully assess yourself.

Existing scalp mole that has changed in feel or visibility.

Hairdresser flagged something unusual.

Routine (annual full-body exam) if any:

Thinning hair or baldness — annual scalp inspection should be standard.

Fair skin with significant lifetime sun exposure.

General 'I want a baseline' check.

For any scalp examination, ask the dermatologist to part your hair systematically. Some practices offer dermoscopy of scalp moles, which is the gold standard for distinguishing benign from concerning lesions.