41. Thumbnail Sketch. No, not the kind of thumbnail on your hand. Thumbnail sketches are rough drawings of potential design concepts or solutions. These sketches are used to visualise and grow various ideas and concepts by hand before moving to the screen. Adham Dannaway
Skin bumps: Bumps or lumps on the skin. See detailed information below for a list of 179 causes of Skin bumps, Symptom Checker, including diseases and drug side effect causes. Â» Review Causes of Skin bumps: Causes | Symptom Checker Â». The following medical conditions are some of the possible causes of Skin bumps.
Types of Skin Lesions. Two types of skin lesions exist: primary and secondary. Primary skin lesions are abnormal skin conditions present at birth or acquired over oneâs lifetime. Birthmarks are primary skin lesions. Other types include:1  blisters: also called vesicles; these are small lesions filled with a clear fluid. 2  Vesicles can be the result of sunburns, steam burns, insect bites, friction from shoes or clothes, and viral infections. 3  macule: freckles and flat moles.ypes of Skin Lesions. Two types of skin lesions exist: primary and secondary. Primary skin lesions are abnormal skin conditions present at birth or acquired over oneâs lifetime. Birthmarks are primary skin lesions. Other types include: