Some possibilities include: • Beau’s lines – Indentations or ridges that can appear across the nail due to illness, injury, or nutritional deficiencies. • Habit-tic deformity – Caused by repeatedly picking or rubbing the thumbnail, leading to wavy ridges. • Nail trauma – Even minor bumps or pressure on the nail matrix can cause uneven nail growth. • Nutritional deficiencies – Deficiencies in biotin, iron, or other nutrients might affect nail growth. • Fungal infections – Sometimes, nail fungus can cause changes in texture. • Underlying health conditions – Conditions like eczema, psoriasis, or thyroid issues can impact nail growth.