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)

Causes

• Hypothyroidism, hyperthyroidism
• Raynaud's disease
• Porphyria
• Photo-onycholysis—Doxycycline, chlortetracycline and chloramphenicol.