3. Rippled or Pitted Nails
Nails that are rippled from side to side or pitted may indicate psoriasis or inflammatory arthritis. Sometimes the skin under the nails will be reddish-brown.
Pitted nails can indicate a connective tissue disorder like Reiter’s syndrome.
Ridges that run from side to side can result from a cuticle injury or serious illness with a high fever. It can also be a sign of uncontrolled diabetes, peripheral vascular disease, or a zinc deficiency. It’s worth a visit to your doctor!