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Living with Acquired hypertrichosis lanuginosa

A rare skin condition in adults with excess soft, fine hair on the face and body, linked with certain other illnesses.

Understanding Acquired hypertrichosis lanuginosa

Acquired hypertrichosis lanuginosa is a rare skin condition with excess fine, soft hair on the face, neck, trunk, and limbs.

It can come with a sore, inflamed tongue, an enlarged tongue, diarrhea, changes in taste, and weight loss. GARD says it is linked with lymphoma or cancers of the digestive system, urinary tract, lung, breast, uterus, or ovary. GARD lists onset as adult.

Signs & symptoms

Symptoms vary from person to person. GARD lists these among the most common:

  • Excess fine hair over the body
  • Inflamed tongue (glossitis)
  • Enlarged tongue
  • Loss of hair color
  • Hair or eyebrow changes
  • Diarrhea and weight loss

Not everyone has every symptom. GARD's list comes from the Human Phenotype Ontology.

Diagnosis

  1. Talk with your doctor

    Share the symptoms you've noticed, when they started and your family health history. Notes and photos can help.

  2. See a specialist

    Specialists who may be involved include genetic specialists and skin, hair, and nail specialists.

  3. Ask which tests can help

    Your care team will decide which exams and tests can confirm the diagnosis.

Care & treatment

Care team
Genetic specialists (geneticists); Skin, hair, and nail specialists (dermatologists)
Expert care
Ask about multidisciplinary care centers for rare conditions
Treatment
GARD doesn't list specific treatments for this condition. Your care team will tailor care to your symptoms.
Research
Clinical trials and observational studies may be options. See the research section below.

General information, not medical advice. Your care team makes the decisions.

Everyday life

Living with a rare condition is easier with support.

  • Connect with Children's Skin Disease Foundation
  • Keep notes on symptoms, changes and questions for appointments
  • Ask about patient registries that help research
  • Look into financial aid and travel resources for care visits
Bring these questions to your next doctor visit
Should I be checked for an underlying condition such as a cancer?
Which specialists, such as dermatology, should be involved?
What can help with the excess hair?

Quick facts

Symptoms usually startAdult

GARD says changes in genes (also called variants) cause this condition. The summary notes it is linked with lymphoma or cancers of several organs.

GeneticSkin

Also known as: malignant down

Patient organizations

Broader rare-disease groups

Source: NIH GARD · Acquired hypertrichosis lanuginosaGARD ID 2864 · GARD page updated September 2026 · Plain-language summary by Know Rare; editorial review pending. General information, not medical advice.

You are more than your diagnosis

Perspectives from people navigating life with Acquired hypertrichosis lanuginosa.

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