What is Albinism?
Albinism refers to a group of genetically inherited disorders where people produce little or no melanin, the substance responsible for the pigmentation of skin, hair, and eyes. It is a condition caused by the mutation of several different genes, and is inherited in an autosomal recessive way. Read on to learn more about albinism sources and albinism treatment.
Patients experience discoloration of their skin, hair, and eyes as symptoms. However, melanin is also important in the development of the optical nerves, so the condition may impair the patients’ vision. The lack of melanin also means that patients are at risk for developing skin cancers such as melanoma.
Types of Albinism
There are different types of Albinism:
Ocular Albinism
This type affects the eyes. This uncommon form of albinism almost exclusively affects male patients. This type of albinism is commonly due to an inherited gene mutation in the X-chromosome.
Oculocutaneous Albinism (OCA)
This is the most common type of albinism. It affects both the patient’s eyesight as well as their skin, hair, and eye pigmentation.
This type is passed on through autosomal recessive inheritance and is due to a mutation of 7 genes (OCA1 to OCA7).
Rare hereditary syndromes
Albinism may appear with other conditions. These include the ff:
- Hermansky-Pudlak syndrome – OCA occurs along with bleeding abnormalities and lung and bowel diseases.
- Chediak-Higashi syndrome – OCA occurs along with immune conditions, causing recurrent infections, neurologic abnormalities and several other serious complications.
Signs and Symptoms: Do You Need Albinism Treatment?
Patients may experience symptoms that affect their skin, hair, eye color, and vision.
Skin and Hair
Patients may present with hair that looks bleached (white), with light-colored skin that may range from white to brown. When exposed to the UV rays of the sun, these patients may develop freckles, moles, sunspots, and sunburns.
Eye Color
The eyelashes and eyebrows of these patients are typically pale. Eye color can vary, from light blue to brown, with the possibility of changing as the patient ages.
Vision
Patients may experience various types of vision impairment, this includes any of the following:
- Regular horizontal oscillation of the eyes (nystagmus). As a result, the head may tilt or bob in order to stabilize involuntary eye movements.
- Inability of the eyes to align with each other when focusing on an object (strabismus)
- Light sensitivity (photophobia)
- Refractive errors such as nearsightedness or farsightedness
- Astigmatism
- Legal blindness
- Poor depth perception