callouses
skin to swell, itch, and become reddened. (The affected areas are called wheals.) When the reaction is limited to small areas of the skin, it is called urticaria. Involvement of larger areas, such as
The hard thing on your toe is likely a callus or a corn. Calluses are thickened areas of skin that develop from repeated friction or pressure, while corns are similar but have a hard core at the center. Both are caused by rubbing and pressure on the skin, often from ill-fitting shoes or repetitive actions.
Reptiles.
segregation
When the reaction is limited to small areas of the skin, it is called "urticaria." Involvement of larger areas, such as whole sections of a limb, is called "angioedema."
If your skin is healthy, it is called a cuticle. The cuticle is at the base of your nail (opposite of the tip). Dry, hard skin around the sides of your nail is considered a hang-nail. Dry, hard skin under the nail is typically psoriasis and needs to be dealt with by a licensed dermatologist.
they have a hard external shell called an exoskeloton that protects their skin.
To remove hard skin on your feet, start by soaking them in warm, soapy water for about 10-15 minutes to soften the skin. After soaking, gently exfoliate the hard areas using a pumice stone or foot file, applying light pressure. Rinse your feet and pat them dry, then moisturize with a thick foot cream to keep the skin hydrated. For persistent hard skin, consider using over-the-counter products containing salicylic acid or consult a podiatrist for professional treatment.
what is a hard material t protects the skin
A lot of animals have hard body covering which makes them hard to become prey. However, animals such as hippopotamus, rhinoceros, and elephants have a hard cover of skin on their body.
Pigs have tough skin as a covering. The skin is naturally dry, but has soft areas under their legs, in their ears and on their bellies.
The hard center part of a feather is called the quill or shaft. It provides support and structure to the feather and attaches it to the bird's skin.