Items tagged “dermatology”
18 results found
Lentigo maligna, also known as Hutchinson freckle, is a non-familial precursor to lentigo maligna melanoma, which accounts for 5-15% of cases of malignant melanoma. It is most frequent in the head and neck. It should not be confused with numerous other Hutchinson named entities including: Hutc...
Skin changes of mercury poisoning (mnemonic)
A mnemonic for the skin changes associated with mercury poisoning is: 5 Ps Mnemonic P: pink P: puffy P: painful P: paraesthesia P: peeling
Lichen planus (mnemonic)
A mnemonic to describe the skin lesions associated with lichen planus is: 5 Ps Mnemonic P: planar P: polygonal P: pruritic P: purple P: papular
Lichen aureus (mnemonic)
The skin changes of lichen aureus can be remembered with the following mnemonic: 5 Ps of lichen aureus Mnemonic pigmented purpuric papules in peripheral patches
Café au lait spots
Café au lait spots are a type of pigmented skin lesions which are classically described as being light brown in colour. Conditions associated with them include: neurofibromatosis type 1 (NF1) Jaffe-Campanacci syndrome McCune-Albright syndrome: typically irregular which has been likened to ...
Kveim Stilzbach skin test
The Kveim Stilzbach skin test is a sensitive and specific test for sarcoidosis, requiring the intradermal injection of homogenized spleen or liver material from a patient with known sarcoidosis. In patients with sarcoidosis, a typical sarcoid granuloma will develop at the injection site within 4...
Sézary syndrome (SS) is a type of cutaneous T-cell lymphoma. It is sometimes considered an advanced and leukaemic form of cutaneous T-cell lymphoma (CTCL). Clinical presentation It is clinically characterised by an extensive erythematous rash covering most of the body as well as the presence o...
Primary cutaneous melanoma
Primary cutaneous melanoma is the most common subtype of malignant melanoma, a malignant neoplasm that arises from melanocytes. Melanocytes predominantly occur in the basal layer of the epidermis but do occur elsewhere in the body. Primary cutaneous melanoma is by far the most common type of pri...
Hidradenitis suppurativa is an inflammatory skin disease of unknown cause. It has an autosomal dominant inheritance pattern, and androgen excess have been postulated. The disease is associated with Crohn disease and Dowling Degos disease. Epidemiology Up to 4% of the general population are af...
Published 24 Aug 2013
Diagnosis almost certain
Published 01 Jan 2015
Granuloma annulare is a benign idiopathic inflammatory disorder of the dermis, characterised by formation of dermal papules in young children. Clinical presentation Granuloma annulare most commonly seen in kids between 2-12 years old and usually it occurs in exterminates. One typical location ...
Cutis laxa is a rare dermatological condition, characterised by elastic fibre loss, resulting in very lax skin. Patients can also develop emphysema. Pathology Cutis laxa may be inherited (autosomal dominant, autosomal recessive, or X-linked recessive) or may occur sporadically. Associations ...
Focal dermal hypoplasia syndrome
Focal dermal hypoplasia syndrome is also known as Goltz syndrome, and is named confusingly similar to Gorlin-Goltz syndrome. Epidemology A rare disorder that follows X-linked dominant inheritance pattern. More commonly seen in males than female. Worldwide only 200-300 cases have been reported....
Ichthyosis is a heterogeneous set of dermatologic conditions marked out by their phenotype of diffuse dryness of the skin. Ichthyosis is usually inherited, but rarely maybe acquired. Epidemiology Inherited ichthyosis (II) accounts for the majority of cases. Ichthyosis vulgaris, the commonest ...
Hypomelanotic macules are otherwise known as ash-leaf spots due to their resemblance to Sorbus aucuparia, or mountain-ash, leaves. These macules have a strong association with tuberous sclerosis and are often multiple and present in the vast majority of individuals with the condition (up to 97% ...
Atypical fibroxanthomas are well-circumscribed mesenchymal skin tumours that mainly manifest in the head and neck Epidemiology Atypical fibroxanthomas are rapidly growing tumours associated with excessive sun exposure, i.e. UV exposure, and usually occur in elderly patients. There is also an a...
Skin cancers refer to malignancies arising from the skin. This is a general discussion of skin cancers, for discussions of specific skin cancers please refer to individual articles. Epidemiology Overall, skin cancers are the most common human malignancy 1. Pathology Primary skin malignancy ...