| BOUTS | fits, as of illness |
| NESTS | Fits, as matryoshka dolls |
| ONSET | First appearance, as of illness |
| SPELLS | Magic incantations; turns at work; fits of illness, irritation etc; or, patches of cold weather, rain or sunshine (6) |
| TERNS | Sounds like fits of illness for seabirds (5) |
| BLOODTEST | Analysis of a sample of blood such as for the diagnosis of illness (5,4) |
| BOUT | A stint of strenuous exercise or overindulgence, for example; a contest or match in boxing, fencing or wrestling; a curve in the side of a violin; or, an attack of illness, such as flu (4) |
| AFFLUENCE | Plenty of illness needing a barrier as protection |
| ACHES | As nursing hospital reveals symptoms of illness? |
| APHID | Bug a sort of doctor about onset of illness (5) |
| BOTULIN | Cause of illness of Usain Bolt unexpectedly leaving South Africa (7) |
| DIAGNOSIS | Identification of illness of girl with no sibling carrying silver (9) |
| BACTERIA | Cause of illness in kind of camel endlessly needing drug injected (8) |
| ABOUTTURN | A period of illness leads to surprise change of attitude |
| SYMPTOM | Sign of illness, such as a runny nose or fever |
| QUILLAI | Tree's roll of curled bark, a first sign of illness |
| SPUTUM | Must work, having turned up as a result of illness (6) |
| HYPNOTHERAPY | Use of mesmerism in the treatment of illness or addiction |
| ACCESS | A way or means of entry; a fit of illness or emotion; or, permission to log in/on to a computer network (6) |
| SICKLIST | In the army or navy, what is a roster of those unable to do duty because of illness? (4,4) |