Vitiligo is a skin disease caused by the loss of pigment as a result of destruction or failure of function of melanocytes. Types of vitiligo are classified based on the pattern and area of skin discoloration. Of these, generalized vitiligo is the most common, characterized by the appearance of symmetrical white spots on different parts of the body, which have a tendency to progress.
Segmental vitiligo shows patches of unilateral bleaching limited to one side of the body, usually following a dermatome, and becomes stable after rapid initial progression. Focal vitiligo produces small isolated patches of discoloration over a limited surface and has no clear pattern. Acrofacial vitiligo involves distal portions of the limbs and facial areas such as fingers, toes, lips, and periocular areas. Mucosal vitiligo affects only the mucous membranes, for example, the mouth or genital areas.Universal vitiligo is a very rare type in which there is an almost complete absence of pigment in the skin, and this type includes all the others, which manifest similar symptoms such as white or light-colored patches of varying size and shape and different -Grow in different ways. For example, associated symptoms include premature graying of the hair, eyebrows, eyelashes or beard. Although the exact cause of vitiligo still remains elusive, it appears to lie somewhere along the autoimmune-genetic-environmental spectrum influencing its presentation and progression.
1. Generalized Vitiligo
The generalized form of vitiligo is often said to be manufacturer generalized and it is in the majority of cases. The common form of vitiligo presents marked areas of skin that are discolored or lighter and usually spread over different parts of the body surface. Symmetrical in most cases, the patches appear to be evenly distributed on both sides of the body. The disorders revert to generalized vitiligo, but this condition occurs gradually and rarely when one analyzes the differences between the sizes and shapes of the patches, as well as their number in relation to time.
Symptoms of Generalized Vitiligo
- Types of colorless patches on both sides:The main feature of generalized vitiligo is symmetry of colorless patches on both sides on the body. For example, if a patch is forming on the left hand, most likely a similar patch will also form on the right hand.
- Widespread loss of pigmentation: While such patches can appear anywhere, they are most evident in areas naturally exposed to sunlight, such as the face, hands, arms, and legs. In severe cases, patches may also be seen on the scalp, armpits, groin areas, and in some rare cases, inside the mouth.
- Variation in size and shape: The size distribution of patches can range from very small to very large and may be irregular, oval, or round.
- Hair changes: Most individuals with generalized vitiligo also develop white or gray hair in the affected area as the hair follicles lose pigmentation.
Typically, generalized vitiligo is progressive, with new patches appearing over months or years. The cause of generalized vitiligo has not yet been fully established by science. It's like an autoimmune disorder, where the body's immune system destroys melanocytes (pigment-producing cells) and causes areas to become discolored. It may also be related to other autoimmune diseases such as thyroid disease, diabetes or rheumatoid arthritis, but the autoimmune connection remains unproven.
Progression Of Generalized Vitiligo
Generalized vitiligo is characterized by gradual progression with new patches appearing periodically. The pace varies from patient to patient: for some, the process follows the previous course, while for others it may establish a limp borderline and then continue its progression for several years. In some cases there is a period of life similar to remission where there is no activity for a long period of time.
Treatment Of Generalized Vitiligo
There is no cure for the condition of generalized vitiligo, yet such management with various treatment methods can improve the problem and improve the appearance of the skin. These treatments include:
- Topical steroids: These may or may not have a rapid effect on restoring pigmentation in small patches by reducing inflammation.
- Phototherapy: Exposure to ultraviolet (UV) light may help stimulate melanocyte activity and promote re-pigmentation.
- Skin grafting or depigmentation: Some patients may also require complete depigmentation of unaffected areas to replace depigmented skin with healthy skin or in extreme cases to achieve an even skin tone.
- Cosmetic camouflage: Makeup or self-tanning products can be used to temporarily cover pigmented patches.
2. Segmental Vitiligo
Segmental vitiligo is not a common type, but it has its own unique characteristics that distinguish it from generalized vitiligo. This type of vitiligo is unilateral and limited to only one particular section or side of the body. Bleached patches often appear linearly or segmentally in a specific area. Typically, this type of vitiligo develops very early in life, either in childhood or during adolescence.
Symptoms Of Segmental Vitiligo
Monolateral depigmentation: Unlike generalized vitiligo, segmental types affect only one side of the body. Small patches spreading along a particular stretch or area cause its onset.
- Rapid onset: Segmental vitiligo, especially during the early stages, progresses very quickly. New patches of depigmented skin develop at an extraordinary rate, sometimes within a few months. Once the active patch appearance phase is over, most cases of segmental vitiligo stop spreading.
- Localized areas: In segmental vitiligo, most of the patches are usually related to a particular area, such as a particular limb, half of the face, or part of the torso. The patches have a geometric or linear appearance following the lines of nerve distribution ("dermatomal" pattern). During the early stages of segmental vitiligo the patches appear very quickly and grow very quickly. However, unlike generalized vitiligo, which continues to spread throughout the body, segmental vitiligo becomes stable after a few months or years. This makes it relatively easier in the long run because the patient will have fewer new patches to deal with.
Progression Of Segmental Vitiligo
Once segmental vitiligo reaches a stable level, it is very unlikely to get worse. The patches will remain stable for many years, although some patients will experience gradual changes in size or shape over time. The prognosis is generally better than generalized vitiligo because it is less likely to cause widespread loss of pigment. However, segmental vitiligo can be of great cosmetic concern, as they are often visible and located on the surfaces of the face or hands.
Treatment For Segmental Vitiligo
- Topical treatment: Topical steroids can be used to treat patches and restore pigmentation in cases of segmental vitiligo and generalized vitiligo.
- Phototherapy: A UV light therapy can effectively awaken the intention to produce pigment in localized patches of segmental vitiligo.
- Surgical procedures: If the patches are stable and meaningful some surgical options may be considered, such as skin grafting or melanocyte transplantation to restore color to the affected areas.
3. Focal Vitiligo
It is a type of depigmentation that is represented by patches localized in certain small areas on the body. This condition of vitiligo is generally more stable than generalized vitiligo because there is little or no spreading or growth of the patches over a period of time. Symptoms Of Focal Vitiligo- Small localized patches: One or a few small patches of depigmented skin are the main features of focal vitiligo. These patches can vary in size but are usually confined to a small area, such as an arm, leg, or part of the face.
- Slow spread: Unlike generalized vitiligo, which develops rapidly, focal vitiligo can remain small for many years without expanding.
- Steady state: Once established this state may remain stable, or it may increase very slowly. In some cases, no new patches develop after years.
- Topical steroids: In very small patches, topical corticosteroids can partially restore pigmentation in the affected area.
- Phototherapy: For local patches, narrow-band UVB can also be used to treat these areas and initiate re-pigmentation.
- Cosmetic camouflage: For small patches of return, people can use makeup or self-tanning products to temporarily make the patches invisible.
4. Acrofacial Vitiligo
Acrofacial vitiligo is a form of the condition that specifically attacks limbs such as the fingers or toes and the face. This type of vitiligo is more localized than generalized vitiligo, but can have a greater cosmetic impact on the body because the affected areas are more exposed.
Symptoms of Acrofacial Vitiligo
- Primarily affecting the face and limbs: Most of the disease is actually limited to the face and hands/feet. There may be patches of de-pigmentation around the eyes and around the mouth or on the fingers and toes.
- Asymmetric: The phenomenon of depigmentation may spread on both hands and feet, but not at the same time. Victims' facial features may be asymmetric, which may limit interaction with the public.
- Visibility: Because they are in places we consider visible, such spots will cause significant concern from a cosmetic standpoint. Patches of lost pigmentation will be clearly visible over large areas of the face and limbs.
- Topical agents: As with all forms of vitiligo, treatment usually includes topical steroids and immunomodulatory medications for further management.
- Phototherapy: Light therapy produces great effects for treating patches found on the face and hands.
- Surgical management: Severe cases may require skin grafting.
5. Universal Vitiligo
It is considered one of the most severe forms of vitiligo. Universalis affects more than 80% of the body. Generally, universalis is progressive, where most of the area turns white, but in the early stages, it shows gradual loss of pigment in areas. Universal Vitiligo Symptoms- Extensive pigmentation: In universal vitiligo, pigmented patches cover almost the entire body, except for a small area of skin that is still pigmented.
- Complete pigmentation: Affected areas completely lose their color over time. This condition can cause the body to appear completely white, and can also affect the eyes, hair, and mucous membranes.
- Hair color changes: Hair may lose its color completely and become either white or gray.
- Combination therapy: It is often recommended to use phototherapy with both topical treatments and possibly systemic medications to prevent progression and encourage re-pigmentation.
- Surgical intervention: Skin grafts or even melanocyte transplantation may sometimes be used for larger areas to restore pigmentation.
6. Mucosal Form Of Vitiligo
Mucosal vitiligo is an uncommon type of disease that affects mucous membranes such as the mouth, lips or genitals. This becomes complicated during treatment as these areas are delicate. Symptoms Of Mucosal Vitiligo- Mucous membrane involvement: The only symptom of mucosal vitiligo will be loss of pigmentation from the membrane and the spots in the affected area becoming lighter than the surrounding tissue.
- Visual changes: Areas like the lips, inside of the cheeks and genitalia are affected by mucosal vitiligo causing these patches to appear.
- Topical treatment: Mucosal vitiligo treatment regimen is similar to other forms, but the use of such medications on delicate mucosal surfaces requires extreme caution.
- Phototherapy: Narrow-band UVB light therapy may prove beneficial in the treatment of mucosal vitiligo, although such light therapy is not usually applied to such sensitive areas.
