chapter Case 1: Haematemesis and warts -- chapter Case 2: Annular lesions on the face of a neonate -- chapter Case 3: A warty plaque on the sole of the foot -- chapter Case 4: Dystrophic nails and lethargy -- chapter Case 5: Stretchy skin -- chapter Case 6: Chronic scaling of the scalp -- chapter Case 7: Generalized papular thickening of the skin -- chapter Case 8: Flexural erythema following chemotherapy -- chapter Case 9: Painful pustules in pregnancy -- chapter Case 10: Discharging nodules on the jaw -- chapter Case 11: Thickening of the facial skin, weakness of the hands and loss of peripheral sensation -- chapter Case 12: A facial and anogenital rash in an infant -- chapter Case 13: Non-healing dog bites -- chapter Case 14: Two patients with pustular plaques on a neurosurgical ward -- chapter Case 15: Fever and purpuric lesions in an infant -- chapter Case 16: Photosensitivity with skin cancers -- chapter Case 17: A papular eruption in a patient with leukaemia -- chapter Case 18: A polycyclic rash in a patient with epilepsy -- chapter Case 19: Flexural papules, thirst and polyuria -- chapter Case 20: Facial plaques and fever -- chapter Case 21: Generalized thickening of the skin following bone marrow transplantation -- chapter Case 22: Pruritic plaques in pregnancy -- chapter Case 23: Multiple painless ulcers in a traveller -- chapter Case 24: A pigmented plaque on the knee -- chapter Case 25: Photosensitivity with scarring -- chapter Case 26: Swelling of the hands and generalized hyperpigmentation -- chapter Case 27: Birthmarks and macrodactyly -- chapter Case 28: Facial nodules, cough and breathlessness -- chapter Case 29: A unilateral breast rash -- chapter Case 30: Fever and a desquamating rash in an infant -- chapter Case 31: A follicular eruption in a vegan -- chapter Case 32: Erythroderma in a Jamaican man -- chapter Case 33: An inflamed toe and a rash on the legs in an immunosuppressed patient -- chapter Case 34: Periorbital erythema following chemotherapy -- chapter Case 35: Nodules and plaques in a boy with progressive liver failure -- chapter Case 36: A unilateral groin rash -- chapter Case 37: Patches, plaques and lymphadenopathy -- chapter Case 38: A plaque on the shin -- chapter Case 39: A rash and numbness involving the right thumb -- chapter Case 40: Widespread skin sloughing in a man with fits -- chapter Case 41: A plaque on the chest -- chapter Case 42: A polymorphic mucocutaneous eruption in a patient with lymphoma -- chapter Case 43: Abdominal pain, fever and acral purpura -- chapter Case 44: Papules on the buttocks -- chapter Case 45: A non-healing crusted plaque in a child -- chapter Case 46: A rash on the face, upper back and hands -- chapter Case 47: A large vascular tumour in an HIV-positive man -- chapter Case 48: Linear blisters and pigmentation in a baby girl -- chapter Case 49: Gradual coarse wrinkling of the skin -- chapter Case 50: Breathlessness and widespread cutaneous necrosis.