in fractures of the scaphoid the only finding may be tenderness localised in the anatomical snuffbox. Occasionally the bones of the hand, particularly the phalanges, may be involved in granulomatous or other generalised disorders such as sarcoidosis, Paget's disease or hyperparathyroidism. Acute dactylitis is characteristic of sickle ceil disease in children. Craves' disease, autoimmune hyperthyroidism, may be associated with finger clubbing and periosteal new-bone formation in the phalanges.

Beau Lines Nails
Fig. 2.29 The nail as a diagnostic aid. 13 Splinter haemorrhages. IB Onycholysis with pitting in psoriasis. 0 Beau's lines. E Leuconychia. U] Dilated capillaries in the proximal nailfold in systemic lupus erythematosus.

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Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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