Physalia pelagica

Natural History.
      Physalia pelagica.
      Portuguese man-of-was.
      N. O. Physophoridae.

Clinical.
      Urticaria.

Characteristics.
      G. Bennett was stung by the animal on second and ring fingers.
      The sensation was as if stung by a nettle, succeeded in a few minutes by violent aching, affecting the finger-joints and spreading up arm, involving elbow-joint.
      The pain was worse by application of water, worse by motion, and worse when joints became affected.
      The pain spread to the shoulder-joint and pectoral muscles causing oppression of breathing.
      After half an hour the symptoms began to abate, leaving numbness of the limb and a vesicle at the spot which was stung.

Relations.
      Compare: Medusa, Urt-u.