Is a rare genetic disorder that primarily affects various organs and tissues in the body due to defects in the biogenesis of lysosome-related organelles, such as melanosomes (pigment-containing organelles), platelet dense granules, and lysosome-related organelles in lung cells. This syndrome is characterized by a variety of symptoms, including:


  • By mutations in various genes, including those encoding proteins involved in the formation and function of lysosome-related organelles. To date, at least 10 different subtypes of HPS have been identified, each associated with mutations in a different gene. The severity of symptoms can vary widely among individuals, even those with the same subtype.


  • Albinism or Hypopigmentation: Individuals with HPS often exhibit lighter skin, hair, and eye color due to the malfunctioning of melanosomes, which are responsible for producing and distributing melanin, the pigment responsible for skin, hair, and eye color.
  • Bleeding Disorders: HPS can lead to abnormal platelet function due to defective platelet dense granules. This can result in easy bruising, prolonged bleeding, and other bleeding-related complications.
  • Pulmonary Fibrosis: Some individuals with HPS may develop pulmonary fibrosis, a condition in which lung tissue becomes scarred and thickened over time, leading to difficulty in breathing.
  • Gastrointestinal Issues: HPS can also affect the gastrointestinal tract, leading to issues such as colitis and other digestive problems.
  • Visual Impairment: Along with skin and hair color changes, HPS can lead to vision problems such as reduced visual acuity, nystagmus (involuntary eye movements), and sensitivity to light.
  • Bowel and Kidney Issues: In some cases, individuals with HPS may experience bowel and kidney abnormalities.


  • Clinical Evaluation: A medical professional, often a geneticist or a physician familiar with rare genetic disorders, will review the individual's medical history and conduct a physical examination. They will look for characteristic signs and symptoms of HPS, such as albinism or hypopigmentation, bleeding disorders, vision problems, and pulmonary issues.
  • Genetic Testing: Genetic testing plays a crucial role in confirming the diagnosis of HPS. A blood or saliva sample is collected from the individual, and DNA sequencing is performed to identify mutations in the genes associated with HPS subtypes. Different subtypes of HPS are linked to mutations in various genes. Genetic testing can help determine the specific subtype of HPS an individual has.
  • Platelet Studies: Platelet studies can help assess platelet function and identify any abnormalities in the platelet dense granules. Platelet aggregation tests and electron microscopy can be used to examine platelet characteristics and granule content.
  • Skin Biopsy: In some cases, a skin biopsy may be performed to examine the melanocytes and melanosomes in the skin. This can provide additional evidence of HPS and help differentiate it from other conditions with similar symptoms.
  • Visual and Ocular Examinations: Comprehensive eye examinations by ophthalmologists or eye specialists can help assess the extent of visual impairment, including problems like nystagmus and sensitivity to light.
  • Pulmonary Function Tests: For individuals with suspected pulmonary involvement, pulmonary function tests can help evaluate lung function and identify any signs of pulmonary fibrosis.


  1. Antimonium Tartaricum (Ant-t): This remedy is often considered for conditions involving excessive mucus in the airways, accompanied by rattling sounds in the chest and difficult, shallow breathing.
  2. Arsenicum Album (Ars): Arsenicum is sometimes used for respiratory symptoms, especially if the person is anxious, restless, and experiences burning sensations in the chest. It may be considered for conditions like bronchitis and asthma.
  3. Ipecacuanha (Ip): Ipecacuanha is commonly used for conditions with persistent, violent coughing spells that lead to nausea and even vomiting.
  4. Bryonia Alba (Bry): This remedy is often associated with dry, painful coughs that worsen with movement. It may be considered for pleurisy or conditions where deep breathing exacerbates the pain.
  5. Spongia Tosta (Spong): Spongia is sometimes used for dry, barking coughs that sound like a saw being drawn through wood. It may be considered for croup or dry, irritated throats.
  6. Phosphorus (Phos): Phosphorus is associated with conditions like bronchitis and pneumonia, particularly when there is a tight, burning sensation in the chest and coughing up of blood-tinged sputum.