A raised bulge on the nail cap may be associated with certain diseases, common diseases such as congenital hypertrichosis and onychomycosis.
1. Congenital Thick Nail Syndrome: This disease is usually inherited in an autosomal dominant manner and is mainly associated with mutations in the keratin gene. The symptoms of thickening of nail beds of fingers and toes, hyperkeratosis of palms and toes, and formation of subcallosal macroglossia usually appear in infancy. The nail plate of the patient is hard and tightly covered with the nail bed, which is full of yellow, hard, keratinized debris, making the distal end of the nail upward, forming a raised bulge in the nail cap and other symptoms.
2. Onychomycosis: this disease is caused by dermatophyte infection of the nail plate and/or nail bed. The main manifestations are turbidity, thickening, discoloration, buckling and detachment of finger (toe) nails, often without obvious symptoms. When the nail plate is hyperkeratotic and thickened, a raised bulge may appear on the nail.
In addition, many skin diseases combined with the manifestation of nail damage, such as lichen planus, psoriasis, etc., the former often have nail pterygium formation and atrophy of the nail plate, and the latter often have the thickening of the nail plate, all of the above can be in the nail cover the appearance of a raised bulge.
Patients should pay attention to reduce nail damage in daily life, and pay attention to personal hygiene; once there is a raised bulge on the nail cover, it is recommended to go to regular hospitals in a timely manner to get a clear diagnosis and standardized treatment in accordance with the doctor’s instructions to avoid delaying the condition.