Category: J

  • Jaw jerk reflex

    Rhythmic contractions of the jaw muscles provoked by tapping a relaxed and open jaw with a percussion hammer, often observed in nervous system disorders.  

  • Jerky pulse

    A pulse where the artery abruptly and noticeably swells, as seen in aortic regurgitation.  

  • Jones position

    The abrupt bending of the forearm at the elbow to treat fractures that affect the condyles.  

  • Jake paralysis

    Paralysis resulting from peripheral neuritis, brought on by the excessive consumption of Jamaican ginger.  

  • Juxta-articular nodules

    Nodules located beneath the skin in individuals afflicted with syphilis or yaws. These growths have a firm texture and are typically located above the joints of the upper limbs, particularly the elbow, as well as on the legs.  

  • Juvenile melanoma

    A raised, reddish-brown skin mark, often referred to as a Spitz naevus, can sometimes manifest on the face or legs during early childhood. Contrary to its name, it’s not cancerous. Even if it’s benign, a growth deemed unattractive or suspected to be skin cancer might be surgically removed.  

  • Juvenile muscular atrophy

    This type of muscle atrophy, characterized by weakening and wasting, emerges in children and teenagers due to an autosomal recessive genetic condition. The primary impact of muscle atrophy is noticeable in the lower limbs and subsequently extends to the upper limbs. There’s also potential involvement of respiratory muscles. In a majority of cases, the affected…

  • Juvenile chronic arthritis

    An uncommon type of arthritis that impacts children is juvenile chronic arthritis, which involves inflammation of the joints. This condition is more prevalent in girls and typically emerges between the ages of two and four, or during the period of puberty. There are three primary categories, all of which lead to joint discomfort, inflammation, and…

  • Junctional naevus

    A pigmented nevus develops when a group of melanocytes, cells that produce pigment, cluster in the skin at the point where the outer layer (epidermis) meets the inner layer (dermis). This nevus appears as a smooth, non-hairy, brown mole on the skin.  

  • Jerky nystagmus

    A type of involuntary eye movement called nystagmus where the eyes drift slowly in one direction and then quickly snap back.