Red or black spots on the fingernails can occur following trauma or injury to the nails. Swelling is a nonspecific symptom that can accompany localized injury or inflammation. Swelling can also be present with infections such as Cellulitis. Generalized swelling throughout the body is a sign of certain types of organ failure. If you are concerned about these or any other symptoms, seek the advice of your doctor.
While the list below can be considered as a guide to educate yourself about these conditions, this is not a substitute for a diagnosis from a health care provider. There are many other medical conditions that also can be associated with your symptoms and signs. Here are a number of those from MedicineNet:
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Fungal Nails
Fungal nails (onychomycosis) may be caused by many species of fungi, but the most common is Trichophyton rubrum. Distal subungal onychomycosis starts as a discolored area at the nail's corner and slowly spread toward the cuticle. In proximal subungal onychomycosis, the infection starts at the cuticle and spreads toward the nail tip. Yeast onychomycosis is caused by Candida and may be the most common cause of fungal fingernail.
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Poison Ivy, Oak, and Sumac
Poison ivy, oak, and sumac contain a substance called urushiol, which causes a rash on people who come in contact with them. Symptoms and signs include a red, swollen, itchy, blistering, bumpy rash. Treatment involves rinsing the exposed area with water, taking antihistamines and over-the-counter pain medications, using topical treatments such as calamine lotion, and applying cool compresses.
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Pseudogout
Pseudogout, a form of arthritis, results when deposits of crystals collect in and around the joints. Symptoms of pseudogout include pain, stiffness, warmth, and joint swelling of the knees, ankles, hips, shoulders, and/or wrists. Treatment for pseudogout aims to decrease inflammation through the use of nonsteroidal anti-inflammatory drugs, ice, and rest.
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Rheumatoid Arthritis
Rheumatoid arthritis (RA) is an autoimmune disease that causes chronic inflammation of the joints, the tissue around the joints, as well as other organs in the body. Early RA signs and symptoms include anemia, both sides of the body affected (symmetric), depression, fatigue, fever, joint deformity, joint pain, joint redness, joint stiffness, joint swelling, joint tenderness, joint warmth, limping, loss of joint function, loss of joint range of motion, and polyarthritis.
At MedicineNet, we believe it is important to take charge of your health through measures such as a living healthy lifestyle, practicing preventative medicine, following a nutrition plan, and getting regular exercise. Understanding your symptoms and signs and educating yourself about health conditions are also a part of living your healthiest life. The links above will provide you with more detailed information on these medical conditions to help you inform yourself about the causes and available treatments for these conditions.
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