Albino refers to a person or animal with albinism, a genetic condition in which the body produces little or no melanin, the pigment that gives color to skin, hair, and eyes. Albinism is present from birth, affects people of all ethnic backgrounds, and causes noticeably lighter pigmentation along with significant effects on vision. The condition is inherited, meaning both parents must carry a copy of the gene variant for a child to be born with it.
A note on language: the word “albino” is widely used but can feel reductive. The National Organization for Albinism and Hypopigmentation (NOAH) notes that many people prefer “person with albinism” because it puts the person first and the condition second, though some individuals are comfortable with “albino” as a descriptor.
How Albinism Works in the Body
Melanin is made through a chain of chemical reactions inside specialized cells. The key step requires an enzyme called tyrosinase, which converts one amino acid into the building blocks of pigment. In albinism, a genetic mutation disrupts this process. Depending on the specific mutation, the enzyme may be completely absent or only partially functional. When tyrosinase is entirely missing, the body cannot produce melanin at all, leading to very white hair, pale skin, and light blue or pinkish eyes. When some enzyme activity remains, a person may develop small amounts of pigment over time, resulting in light blonde hair or slightly tinted irises.
Because melanin also plays a role in the development of the eyes and the optic nerve, the effects of albinism extend well beyond appearance.
Types of Albinism
Researchers have identified at least eight types of oculocutaneous albinism (the form affecting skin, hair, and eyes), each caused by a mutation in a different gene. Type 1, caused by mutations in the TYR gene, is the most well-known and often the most visually apparent because it can eliminate melanin production entirely. Type 2, linked to the OCA2 gene, is especially common in Sub-Saharan Africa and typically allows some pigment to develop. Types 3 and 4 involve different genes (TYRP1 and SLC45A2) and tend to produce milder pigment changes.
There is also a form called ocular albinism, which primarily affects the eyes while skin and hair color may appear near-normal. This form is inherited differently and is more common in males.
Effects on Vision
Vision problems are the most medically significant part of albinism, and they affect nearly everyone with the condition regardless of type. The most common issue is nystagmus, an involuntary back-and-forth movement of the eyes that typically appears within the first few weeks of life. In infants, the movements tend to be large and noticeable. They usually lessen with age but don’t disappear completely.
People with albinism also commonly experience reduced depth perception, crossed or misaligned eyes (strabismus), and significant sensitivity to bright light. A hallmark feature, and one doctors use to confirm the diagnosis, is misrouting of the optic nerve fibers. Normally, visual signals from each eye split evenly between both sides of the brain. In albinism, an unusually large proportion of nerve fibers cross to the opposite side, which disrupts how the brain processes visual information and contributes to reduced visual sharpness.
Visual acuity varies widely. Some people have mild impairment that corrective lenses largely address. Others have low vision that requires specialized aids like tinted contact lenses that reduce glare by limiting how much light enters the eye, or small telescopic devices mounted on glasses that provide magnification for both distance and close-up tasks. These tools can meaningfully improve daily functioning and quality of life.
Skin Cancer Risk
Without melanin’s natural UV protection, the skin is highly vulnerable to sun damage. This is a serious health concern, particularly in tropical and equatorial regions. In parts of Africa, many people with albinism develop potentially life-threatening skin cancers by their 30s. Squamous cell carcinoma is especially common in these populations.
Sun protection is the single most important health measure for anyone with albinism. Protective clothing, wide-brimmed hats, and sunscreen all help, though clothing is considered more practical and reliable than sunscreen alone, especially in rural areas where reapplication throughout the day isn’t always feasible. Starting these habits in childhood is critical for reducing long-term cancer risk.
How Albinism Is Inherited
Most forms of albinism follow an autosomal recessive pattern. This means a child must inherit two copies of the mutated gene, one from each parent, to have the condition. Parents who each carry one copy are called carriers. They typically have normal pigmentation themselves and may have no idea they carry the gene. When two carriers have a child, there is a one-in-four chance that child will have albinism.
Genetic testing can identify the specific type of albinism and help parents understand the likelihood of passing the gene to future children.
Related Syndromes
In rare cases, albinism occurs as part of a broader syndrome that affects other body systems. The most notable is Hermansky-Pudlak syndrome, which combines the typical pigment and vision changes of albinism with a blood clotting disorder. People with this syndrome bruise easily and bleed longer than normal because their platelets lack the internal structures needed to form clots properly.
Some types of Hermansky-Pudlak syndrome also carry risk of pulmonary fibrosis, a progressive scarring of the lungs that can cause breathing difficulties. Types 1, 2, and 4 are the forms most associated with lung involvement. Less commonly, the syndrome can cause intestinal inflammation or kidney problems. There are nine recognized types, each linked to a different gene.
How Albinism Is Diagnosed
Diagnosis usually starts with observation at birth or in early infancy, when unusually light skin and hair compared to family members raise the possibility. A thorough eye exam by an ophthalmologist is the most important diagnostic step. The doctor looks for characteristic signs like underdeveloped retinal pigment, nystagmus, and evidence of optic nerve misrouting using specialized electrical tests that measure how visual signals travel from the eyes to the brain.
The doctor will also review whether the child has had unusual bruising or prolonged bleeding, which could point to a syndrome like Hermansky-Pudlak. Genetic testing confirms the diagnosis and identifies the specific type, which helps guide expectations about how much pigment may develop over time and whether systemic health monitoring is needed.