Nick who observes thickening and discoloration of the nail of the index finger is most likely suffering from a fungal infection. Nail fungal infection is also known as onychomycosis or tinea unguium and is caused by many different types of fungi (yeasts or molds) . This infection cause the nail to become discolored, thick, and more likely to crack and break.
Answer:
Adolescents prefer to remain aloof and also do not want to mix up with other grown up individuals.
