What can cause hyperkeratosis?

Psoriasis arsenic trioxide Papillon Lefevre syndrome melarsoprol Harlequin type ichthyosis Naegeli-Franceschetti-Jadassohn syndrome Rothmund-Thomson syndrome Hawkinsinuria scabies keratosis pilaris actinic keratosis lichen planus Bowen's disease Werner syndrome Bleomycin cutaneous horn incontinentia pigmenti Leser-Trelat sign Pityriasis rubra pilaris epidermolytic hyperkeratosis Howel-Evans-Clark syndrome Haber syndrome Cardiofaciocutaneous syndrome erythroderma Erythrokeratoderma variabilis Vohwinkel mutilating keratoderma Naxos disease Olmsted syndrome restrictive dermopathy Peplomycin Arsenicals Basal cell papilloma Stucco keratosis Bazex-Dupre-Christol syndrome Hyperkeratosis lenticularis perstans Acquired acral fibrokeratoma of finger Lichen spinulosus Palmoplantar punctate keratoderma type 3 Reiter syndrome Squamous cell carcinoma of skin Tylosis Tuberculoid leprosy.

Actinic keratosis actinic keratosis, a premalignant condition of thick, scaly, or crusty patches of skin wikipedia lichen planus lichen planus, an inflammatory disease that affects the skin and the oral mucosa wikipedia Bowen's disease Bowen's disease, a neoplastic skin disease, considered either as an early stage or intraepidermal form of squamous cell carcinoma wikipedia Werner syndrome Werner syndrome, a very rare, autosomal recessive disorder; its most recognizable characteristic is premature aging wikipedia Bleomycin Bleomycin, a glycopeptide antibiotic produced by the bacterium Streptomyces verticillus wikipedia cutaneous horn cutaneous horn (Cutaneous horns, also known by the Latin name cornu cutaneum, unusual keratinous skin tumors with the appearance of horns, or sometimes of wood or coral) wikipedia incontinentia pigmenti incontinentia Pigmenti, a genetic disorder that affects the skin, hair, teeth, and nails wikipedia Leser-Trelat sign Leser-Trélat sign, an explosive onset of multiple seborrheic keratoses, often with an inflammatory base Pityriasis rubra pilaris Pityriasis rubra pilaris, a rare and chronic skin disorder that often has a sudden onset wikipedia epidermolytic hyperkeratosis epidermolytic hyperkeratosis, also known as bullous congenital ichthyosiform erythroderma Brocq, a rare skin disease in the ichthyosis family affecting around 1 in 250,000 people wikipedia Howel-Evans-Clark syndrome Howel–Evans syndrome, an extremely rare condition in which the skin of the palms of the hands, and soles of the feet, affected wikipedia Haber syndrome Haber syndrome, the cutaneous disorder of hyperpigmentation characterized by reticulated pigmentation of the person's skin wikipedia Cardiofaciocutaneous syndrome Cardiofaciocutaneous Syndrome, an extremely rare and serious genetic disorder wikipedia erythroderma erythroderma (any skin disorder involving abnormal redness) wikipedia Erythrokeratoderma variabilis Erythrokeratoderma variabilis (an autosomal dominant skin disease characterized by transient and variable noninflammatory erythema and hyperkeratosis) Vohwinkel mutilating keratoderma Vohwinkel mutilating keratoderma, the cause and medical concept with DiseasesDB code "32216" Naxos disease Naxos disease, the cause and medical concept with DiseasesDB code "32560" Olmsted syndrome Olmsted syndrome, the cause and medical concept with DiseasesDB code "32827" restrictive dermopathy Restrictive dermopathy, the rare, lethal autosomal recessive skin condition characterized by abnormal facies, tight skin, sparse or absent eyelashes, and secondary joint changes wikipedia Peplomycin Peplomycin (an antineoplastic agent derived from bleomycin) Arsenicals Arsenicals (a poisonous chemical used to kill weeds and pests) Basal cell papilloma Basal cell papilloma (benign eccrine poromas that present as multiple oval, brown-to-black plaques, located mostly on the chest and back) Stucco keratosis Stucco keratosis, the cause and medical concept with DiseasesDB code "31357" Bazex-Dupre-Christol syndrome Bazex-Dupré-Christol syndrome, the very rare condition inherited in an X-linked dominant fashion wikipedia Hyperkeratosis lenticularis perstans Hyperkeratosis lenticularis perstans, the cause and medical concept with DiseasesDB code "33701" Acquired acral fibrokeratoma of finger Acquired acral fibrokeratoma of finger, the cause and medical concept with DiseasesDB code "31090" Lichen spinulosus Lichen spinulosus, a rare skin disorder characterized by follicular keratotic papules that are grouped into large patches wikipedia Palmoplantar punctate keratoderma type 3 Acrokeratoelastoidosis of Costa, the familial condition characterized by multiple keratotic papules on the dorsum of the hands and feet, palms, soles, in which electron microscopy shows rarified, abnormal elastic tissue wikipedia Reiter syndrome Reiter syndrome (triad of nongonococcal urethritis followed by conjunctivitis and arthritis) Squamous cell carcinoma of skin Squamous cell carcinoma of skin (a carcinoma arising from the squamous cells of the epidermis) Tylosis Tylosis (an autosomal dominant disorder characterized by a widely distributed, well-demarcated hyperkeratosis of the palms and soles) Tuberculoid leprosy Tuberculoid leprosy (a principal or polar form of leprosy in which the skin lesions are few and are sharply demarcated).

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