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Causes of alteration in nail

Causes of alteration of nail are
  • Clubbing
  • Koilonychia
  • Beausline
  • Plummer nail
Beau’s Line are the transverse ridges in the nail plate due to temporary alteration of nail growth rate.
Causes of Beaus line are the following
  • Acute febrile illness
  • Pneumonia
  • Exanthems—Measles, Mumps
  • Myocardial infarction, Pulmonary infarction
  • Childbirth
  • Drug reaction.
Plummer Nail
Onycholysis of the nail (rat bitten nail)
  • Hypothyroidism, hyperthyroidism
  • Raynaud's disease
  • Porphyria
  • Photo-onycholysis—Doxycycline, chlortetracycline and chloramphenicol.