Funtabulously Frivolous Friday Five 133

Propanethiol S-oxide

When you cut an onion, separate enzymes start mixing and produce propanethiol S-oxide, which is a volatile sulphur compound. The gas that is emitted reacts with the water of your eyes and forms sulphuric acid. The sulphuric acid causes burning sensation in your eyes and in turn leads to the tears glands secreting tears.

Yes, according to a study done here in Australia:

Of 91 patients with violent and acute behavioural disturbance, 21 (23%) presented during the full moon — double the number for other lunar phases (P = 0.002). Sixty (66%) had either alcohol intoxication or psychostimulant toxicity, and five attacked staff (biting [2], spitting [1], kicking [1] and scratching [1]). In contrast, 512 hospital security calls for patients with less severe behaviour were evenly distributed throughout the lunar cycle.

Calver et al, MJA

• Calver LA, Stokes BJ, Isbister GK. The dark side of the moon. Med J Aust. 2009 Dec 7-21;191(11-12):692-4.
  

Pulmonary infarction

Hampton hump refers to a dome-shaped, pleural-based opacification in the lung most commonly due to a pulmonary embolism and lung infarction

Associated signs of pulmonary embolism/infarction

• Nils Westermark (1892 – 1980) [Westermark sign 1938]
• Aubrey Otis Hampton (1900 – 1955) [Hampton hump 1940]
• Felix George Fleischner (1893 – 1969) [Fleischner sign 1959]
• C. H. Joseph Chang (1929 – 2017) [Chang sign 1965]
• Antonio Palla (1950 – ) [Palla sign 1983]

Fish Sperm

Erysipelas. 

It is an infection of the upper dermis and superficial lymphatics, usually caused by beta-haemolytic group A streptococcus. 

Erysipelas is more superficial than cellulitis, and is typically more raised and demarcated. 

Or occasionally herpes zoster if you are from Italy or Malta.