Not easy handwriting, is it!
Here's my best try:
Hair loss corona. Ing and ?? adenitis. Skin
nil. M plaques tonsils. S palida found. Wass++ 7.10.18
(I can't read the next line, I suspect it refers to treatment) 1.10.18-16.10.18
Lesions healed Transferred Plymouth for further
treatment.
I can't read the final part either, in fainter ink; I wonder if this refers to further treatment?
"Translating" this, he was showing signs of secondary syphilis with hair loss, swollen glands in the inguinal (groin) region + somewhere else and patches in his mouth (tonsils), but no skin rash. The syphilis bacterium, (treponema pallidum) was found and the Wassermann reaction (a blood test for syphilis) was positive.