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Lichen planus may be categorized as affecting mucosal or cutaneous surfaces.. Cutaneous forms are those affecting the skin, scalp, and nails. [10] [11] [12]Mucosal forms are those affecting the lining of the gastrointestinal tract (mouth, pharynx, esophagus, stomach, anus), larynx, and other mucosal surfaces including the genitals, peritoneum, ears, nose, bladder and conjunctiva of the eyes.
A papulosquamous disorder is a condition which presents with both papules and scales, [1] or both scaly papules and plaques. [2] Examples include psoriasis, lichen planus, [3] and pityriasis rosea. [4]
These lesions, called plaques, may be irregularly round-shaped to oval and are 10 cm (4 in) or larger in diameter. [2] They can be very thin plaques that are asymptomatic or mildly pruritic . [ 2 ] [ 3 ] Large-plaque parapsoriasis is a common associate of retiform parapsoriasis , can be accompanied by poikiloderma vasculare atrophicans , and ...
There are some authors who prefer to limit the term "parapsoriasis" to large- and small-plaque variants only. [2] However, the following classification scheme is now generally accepted: [3]: 450 Large-plaque parapsoriasis; Small-plaque parapsoriasis; Pityriasis lichenoides. Pityriasis lichenoides chronica; Pityriasis lichenoides et ...
Lichen planus: Lichenoid reaction (e.g. Lupus erythematosus, Graft versus host disease, Drug-induced lichenoid reaction) Psoriasis: Idiopathic and smoking related: Leukoplakia Smoker's keratosis (Stomatitis nicotina) Others e.g. Smokeless tobacco keratosis ("tobacco pouch keratosis") Neoplastic: Oral squamous cell carcinoma: Carcinoma in situ ...
Lichenoid keratosis (benign lichenoid keratosis, lichen planus-like keratosis, solitary lichen planus, solitary lichenoid keratosis) Linear verrucous epidermal nevus (linear epidermal nevus, verrucous epidermal nevus) Malignant acrospiroma (spiradenocarcinoma) Malignant mixed tumor (malignant chondroid syringoma) Malignant trichilemmal cyst ...
Psoriasis in the mouth is very rare, in contrast to lichen planus, another common papulosquamous disorder that commonly involves both the skin and mouth. [28] When psoriasis involves the oral mucosa (the lining of the mouth), it may be asymptomatic, [ 28 ] but it may appear as white or grey-yellow plaques. [ 28 ]
Examples include lichen planus, lichen sclerosus and lichen nitidus. It can also be associated with abrasion or drug use. [2] It has been observed in conjunction with the use of proton pump inhibitors, and might be a sign and/or symptom of lupus such as subacute cutaneous lupus erythematous, according to the case reports and reviews. [3] [4] [5 ...