Common symptoms present in the different types of<unk>  include a runny nose; dry scalp; eye problems; skin lesions; muscle weakness; reddish skin; smooth, shiny, diffuse thickening of facial skin, ear, and hand; loss of sensation in fingers and toes; thickening of peripheral nerves; a flat nose from destruction of nasal cartilage; and changes in phonation and other aspects of speech production. In addition, atrophy of the testes and impotence may occur.<unk>  can affect people in different ways. The average incubation period is five years. People may begin to notice symptoms within the first year or up to 20 years after infection. The first noticeable sign of<unk>  is often the development of pale or pink coloured patches of skin that may be insensitive to temperature or pain. Patches of discolored skin are sometimes accompanied or preceded by nerve problems including numbness or tenderness in the hands or feet. Secondary infections (additional bacterial or viral infections) can result in tissue loss, causing fingers and toes to become shortened and deformed, as cartilage is absorbed into the body. A person's immune response differs depending on the form of<unk> . Approximately 30% of people affected with<unk>  experience nerve damage. The nerve damage sustained is reversible when treated early, but becomes permanent when appropriate treatment is delayed by several months. Damage to nerves may cause loss of muscle function, leading to paralysis. It may also lead to sensation abnormalities or numbness, which may lead to additional infections, ulcerations, and joint deformities. File:Paucibacillary<unk>  (PB).Paucibacillary<unk>  (PB): Pale skin patch with loss of sensation File:Leprosy thigh demarcated cutaneous lesions.Skin lesions on the thigh of a person with<unk>  File:Leprosy deformities hands.Hands deformed by<unk>
Leprosy
Sporotrichosis
Onychomycosis
Mumps
Tinea barbae
Tinea faciei
Trichinosis
Tinea manuum