: High-quality guards are often made from breathable nylon or soft cotton to ensure comfort during long-term wear. Some durable versions use cowhide or leather for increased resistance.

: This condition presents as ridges in the thumbnail caused by chronic picking or rubbing of the cuticle. Physicians often recommend covering the area with tape as a primary therapy to halt the behavior and allow the nail to heal.

: These devices act as a physical deterrent for adult thumb sucking, skin picking (dermatillomania), nail biting, or hair pulling (trichotillomania).

: For physical activity, specialized guards like the ThumbPro are used in sports like baseball to protect the thumb from impact during play.

In broader reports, "covering with the thumb" is used as a metaphorical or literal safety metric: