<prompt> Cocks peculiar tumour isSecondary to infected sebaceous cystSecondary to osteomyelitis of skull bonesSecondaries in skull bones from carcinoma thyroidEpithelioma of scalp  <response>: Secondary to infected sebaceous cyst 594-BaiIy Love 25thCocks peculiar tumour - Infected ulcerated sebaceous cystAn infected cyst may discharge its contents. If an ulcerated surface remains, it can resemble an epithelioma, and to which the term Cocks peculiar tumour may be appliedALSO - REMEMBERS MoIIuscum fibrosum - are polypoid or filiform soft flashy skin tags which occur on the neck trunk andface Cylindroma syn turban tumour - extensive turban like swelling over the scalp, relatively benign Glomus tumour is seen in fingers Subungual role - thermal regulation RANULA is a retension cyst of minor salivary glands transluscent bluish swelling in the floor of the mouth Treatment - complete excision or marsupialization for large cystGLOMANGIOMA or Glomovenous malformation Typical glomus tumour are sub categorized as solid glomus tumour, glomangioma glomangiomyoma Solid glomus tumour is the most common variety of glomus tumour Glomangioma, comprises approximately 20 of glomus tumour are characterized by dilated veins surrounded by small clusters of glomus cells Glomangioma occure more often during childhood are rarely subungual are less likely to be painful or symptomatic Most predominate on the hand and forearm Histologically they are usually poorly circumscribed, occasionally plaque like lesion that resemble cavernous hemangioma Secondary thrombosis phlebolith formation may occur in these lesions just as they would in an ordinary hemangioma Hidradentitis suppurativa - is a chronic suppurative condition of apocrine gland Modified sweat gland bearing skin which is found in the axillae, sub mammary regions, nape of the neck, groin, mons pubis, inner thigh sides of the scrotum as well as the perineum buttocks Fordyces spots - are ectopic sebaceous glands, which has no erythcmous halos are found in the mouth of healthy individuals. It is not a sign of internal malignancy Miliaria - is a disorder that occurs as a result of either obliteration or disruption of the Eccrine sweat gland Milium - is a small sub epidermal keratin cyst that occurs in under developed sebaceous glandDercums disease Adiposis Dolarosa - It is characterized by the presence of multiple circumscribed or diffuse painful sub cutaneous fat depositions on the trunk and limbs, particularly near the kneeAcute Febrile Neutrophilic Dermatosis SWEETS SYNDROMECharacterized by, fever, neutrophilia, erythematous, tender papulo- nodulo- plaques and targetoid lesions with pseudo vesiculation. Common women following RTIAssociated with malignancy, AML, lymphoma, myeloma, myelodysplastic syndromes and solid tumours primarily of the genitor-urinary tract as well as drugs cg-all- transretinoic acid 