Wart – Types And Causes of Warts
A wart is a kind of small tumor which is mostly rough. It is generally seen on hands or feet as well as at other locations. When a wart is seen to occur on the foot sole or toe, it is also named as verruca. A wart may resemble a cauliflower-shaped blister which is mostly hard or solid to touch. The type and cause of warts are discussed below for a better understanding.
Types of Warts
Warts have been identified based on their shape and location of occurrence. The type of virus (pathogen or disease-causing agent) also decides over the type of wart. The various types include –
- Common Wart – This type of wart is also known as Verruca vulgaris. The common wart occurs commonly on hands as raised blisters with roughened surface.
- Flat Wart – The flat wart is also known as Verruca plana which occurs mostly in large numbers as small and flattened blisters with smooth surface. These warts are often flesh-coloured occurring mostly on face, hands, knees, wrists and neck.
- Filiform Wart – This type of wart is also known as digitate wart which occurs as thread-like or finger-like wart. The filiform wart is found commonly on face mostly near eyelids and lips.
- Plantar Wart – The plantar wart can also be named as Verruca wart or Verruca pedis. It if often found as a hard lump with multiple black-colored specks in the centre. These lumps can sometimes be painful and found on pressure points present on the foot soles. When such warts are found on hands, these are named as Palmer warts.
- Mosaic Wart – Mosaic warts occur as a group of plantar-type warts clustered tightly. The mosaic warts occur mostly on the hands and foot soles.
- Genital Wart – A genital wart is also called Venereal wart, Verruca acuminata or Condyloma acuminatum. This type of wart always occurs on the genitalia.
- Periungual Wart – This wart is found around the nails, appearing as a cluster of cauliflower-like warts.
Causes of Warts
Occurrence of warts on our body is very common. These are caused by the viral infection. The Human Papilloma Virus (HPV) is specifically the cause of warts in humans. This virus is contagious can get transmitted during physical contact with an infected person. Even using articles like towels, containers of an infected person can pass the infection to you. Warts generally last for a few months and then disappear gradually, but may last for few years or may even recur. Approximately 130 strains of HPV are found in nature, out of which Type 1, 2 and 3 are the most common causes of warts.
- HPV Type 1 – This causes deep Plantar and Palmar warts.
- HPV Type 2 – The type 2 virus cause Common, Planatar, filiform and Mosaic warts.
- HPV Type 3 – The type 3 viral strain of Human Papilloma Virus cause Plane or Flat warts.
- HPV Type 6, 11, 16, 18, 30, 31, 33-35, 39-40 strains cause Anogenital warts and a few others.
- HPV Type 6 & 11 – These cause about 90% of Genital warts.
- HPV Types 16 & 18 – About 70% of cervical cancers are caused by these viral strains. These may also cause Vulvar, vaginal, anal and penile cancers.