Unwanted Hair Growth (Hirsutism)
Unwanted hair growth means coarse, dark hair appearing where fine, pale hair used to be: the upper lip, chin, jawline, chest, upper abdomen, lower back or inner thighs. It usually arrives slowly, over months or years, and is easy to underestimate because you see yourself every day. A dated record, with occasional photos taken in the same light, turns a vague impression into something you and a clinician can actually measure.
Why track this symptom?
- Hair grows in slow cycles, so a dated log shows change that a daily mirror hides.
- Logging medications, weight and cycle dates alongside hair change can surface a trigger.
- Photos plus severity ratings give your clinician evidence instead of recollection.
How Trace Health helps
Log hair growth in one tap as mild, moderate or severe, area by area, without writing an essay. Add medications, weight, cycle notes, stress and sleep on the same timeline, so a slow drift appears as a line rather than a feeling. Health data stays on your iPhone by default, with optional private iCloud sync.
Common causes
In someone assigned female at birth, most hirsutism traces back to raised androgen activity, and polycystic ovary syndrome accounts for the large majority of cases, typically alongside irregular or absent periods and acne. Idiopathic hirsutism, where androgen levels test normal and cycles are regular, is the next most common; family and ancestry affect hair density too. Less commonly, non-classic congenital adrenal hyperplasia produces a similar picture from adolescence onward. Rarer causes include Cushing's syndrome, high prolactin, thyroid disease, and androgen-secreting ovarian or adrenal tumors, which usually announce themselves by speed. Drugs matter as well: testosterone, anabolic steroids, danazol, some progestins and valproate can all drive coarse hair growth.
When to see a doctor
Seek prompt assessment if coarse hair appears rapidly, over weeks to a few months, especially with a deepening voice, clitoral enlargement, increased muscle bulk or periods stopping. That combination can point to an androgen-secreting ovarian or adrenal tumor. Purple stretch marks, easy bruising, a rounded face, or newly diagnosed high blood pressure or diabetes alongside hair growth also deserve an early appointment. Slow growth over years, with irregular cycles, acne or scalp thinning, is worth booking a routine appointment to discuss hormone testing and options.
Frequently Asked Questions
Why am I suddenly growing thick hair on my chin?
Chin and upper lip hair is the most common presentation of hirsutism, and polycystic ovary syndrome accounts for the large majority of cases. PCOS is usually gradual and often comes with irregular or absent periods, acne, or thinning at the crown. Growth that appears over weeks rather than drifting over years is assessed differently and needs prompt review. Log where the hair is, how coarse it feels, how often you remove it, your cycle dates and any new medications, since removal frequency is often the clearest measure of change over time.
How long does hirsutism treatment take to work?
Hair follicles run in cycles, and a follicle already in its growth phase will finish that phase regardless of what you take. That is why combined oral contraceptives, anti-androgens such as spironolactone, or metformin where it is appropriate are usually judged at around six months rather than six weeks. Mechanical removal continues during that period. Track removal frequency month by month, because moving from shaving daily to twice a week is a real result even when the mirror looks unchanged. Bring that record to your review appointment.
What is the difference between hirsutism and hypertrichosis?
Hirsutism means coarse, dark, terminal hair in a male pattern: upper lip, chin, chest, upper abdomen, lower back and inner thighs. It is driven by androgens. Hypertrichosis is a general increase in hair, fine or coarse, anywhere on the body, not following a male pattern, and is more often linked to medications such as minoxidil, ciclosporin or phenytoin. Some hair density is simply familial and varies widely between families and ancestries, so lifelong stable hair is a different question from new change. Note when you first noticed a difference.
When should I worry about excess hair growth?
Rapid change over weeks to a few months, particularly with a deepening voice, enlargement of the clitoris, increased muscle bulk, a receding hairline or periods stopping, needs prompt medical assessment, because that pattern can point to an androgen-secreting ovarian or adrenal tumor. Purple stretch marks, easy bruising, a rounded face, weakness climbing stairs, or new high blood pressure or diabetes alongside hair growth also warrant early review. Gradual growth with irregular periods or acne can be discussed at a routine appointment.
What should I bring to an appointment about facial and body hair?
Bring dates: when you first noticed the change, how quickly it progressed, your cycle pattern over the past year, your weight trend, every medication and supplement including any testosterone or steroid use, and family history of similar hair growth or diabetes. Monthly photos taken in the same light and at the same distance are more useful than any description. Trace Health charts severity, removal frequency and lifestyle factors on one timeline and exports a doctor-ready PDF, so a short appointment starts with evidence rather than recall.
Your health data stays on your iPhone.
No account. Private. No personal information is ever requested. Your health data stays on your iPhone by default. A backup option to your private iCloud is available. Trace Health never collects or sells your health data.
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Read the complete guide: How to Track Unwanted Hair Growth Over Time →